An accelerating object of mass m=14 kg is fired with an initial speed v-2 m/s at a starting point. If its kinetic energy at its final destination is K.E=147 J. What is the resultant work (in joules) done on the object? A. 919 B. 1119 C. None D. 119 E. 619

An accelerating object of mass m=14 kg is fired with an initial speed v-2 m/s at a starting point. If its kinetic energy at its final destination is K.E=147 J. What is the resultant work (in joules) done on the object? A. 919 B. 1119 C. None D. 119 E. 619

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 72P: A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a...

See similar textbooks

Related questions

Q: v = 15 ms The Smart Car shown in the picture has speed and mass as shown. 860 kg 6. What is the…

A: mass m= 860 kg v= 15 m/s let kinetic energy = K

Q: A baseball of mass 0.145 kg traveling at 40.0 m/s is caught with a glove, bringing the ball to rest.…

A: Mass,m=0.145 kgspeed,v=40 m/sDisplacement,d=0.010 mNow,A) Find the kinetic energy of the ball…

Q: An accelerating object of mass m=1 kg is fired with an initial speed v-2 m/s at a starting point. If…

Q: 4. John stands on a bridge and throws a stone vertically off of it with an initial speed of 10 m/s.…

A: The stone is thrown upwards and hence the initial velocity of the stone is 10m/s The kinetic energy…

Q: 1. What is the total mechanical energy (TME) of a 1000kg motorcycle resting on the top of a 10m…

Q: •P17 You throw a ball of mass 160 g upward (Figure 6.79). When the ball is 2 m above the ground,…

A: Given data: Mass (m) = 160 g = 0.160 kg Initial speed (Vi) = 19 m/s Final speed (Vf) = 19 m/s…

Q: A 67.0−kg short-track ice skater is racing at a speed of 12.4 m/s when he falls down and slides…

A: Given Mass of the ice skater is m=67.0 kg Initial speed of the ice skater is v0=12.4 m/s Final…

Q: 11. A bicycle has a kinetic energy of 131 J. What kinetic energy would the bicycle have if it had ……

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Object A has 27 J of kinetic energy. Object B has one-quarter the mass of object A. (a) If object B…

A: GIVEN : Object A has Kinetic energy = 27 J Object B has mass mB=14mA (a) Object B has kinetic…

Q: A 5-kg block moves along the x-axis. Its position changes with time as x=6-8t where x in meters and…

A: Given, mass of the block m = 5 kg x = 6-8t2 We know that velocity v is v=dxdtv=d6-8t2dtv=-16t m/s

Q: A19.7-N box starting at rest slides down a rough 5.0-m long ramp, inclined at 30° with the…

A: Weight of box is W = Mg = 19.7 N Assuming g = 10 m/s² Mass of the box is M = 19.7/10 = 1.9 kg…

Q: A 0.300-kg ball has a speed of 15.0 m/s. (a) What is its kinetic energy? (b) What If? If its speed…

Q: 62. A small block of mass 200 g starts at rest at A, slides to B where its speed is vå = 8.0 m/s,…

A: When we drop a ball on the ground, it begins to move with some velocity. However, no force should be…

Q: •P49 You throw a ball straight up, and it reaches a height of 20 m above your hand before falling…

Q: Q05. If an object goes to the left, but one of the forces pushes it to the right, opposing its…

Q: Review. A boy starts at rest and slides down a frictionless slide as in Figure P8.45. The bottom of…

A: distance = d height = h

Q: Boxes A and B as shown have masses of 12.0 kg and 4.0 kg, respectively. The two boxes are released…

A: Given details: Mass of A=12.0kg Mass of B=4.0kg Released from rest The initial velocity of A=0 The…

Q: KE-1 a) A 1,500kg car is traveling at 30.0m/s. How many joules of kinetic energy does the car have?…

A: kinetic energy of object is given as K.e = 1/2 mv2 here m = mass of object v = velocity of…

Q: How fast would an 87 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet…

A: The kinetic energy of a body of mass m moving with velocity is given by, K=12mv2

Q: A 5.70-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…

A: Here, we have to calculate the Kinetic energy and change in kinetic energy

Q: 11. (i) A small 35g toy rocket is launched straight up from the ground at 108 km/h (a) What is the…

Q: 1. A net force of 60 N accelerates a 4-kg mass over a distance of 15 m. a) What is the work done by…

A: Given: F=60 Nm=4.0 kgd=15mu=0 m/s

Q: 8) A baseball of mass m arrives at a batter with speed v. The batter swings, and hits the ball. The…

A: The workdone by the bat is nothing but the change in the kinetic energy of the ball. So, all we have…

Q: 5) A particle of mass 200g is thrown vertically upwards with a speed of 10ms-1, the work done by…

Q: 1. Pete lifts a 500 Newton barbell to a height of 1.2 meters. (a) How much force must Pete apply to…

A: Given: Weight of barbell W=500 N Height hoti which barbell is to be lift h=1.2 m To determine (a)…

Q: A 47.8-g golf ball is driven from the tee with an initial speed of 41.4 m/s and rises to a height of…

Q: 1.A force of Si + j+ 2k N displaced a body from a position of i+j+km to 2i+4j+ 6k m. How much work…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: If an artillery shell loses three quarters of its velocity to air resistance during its 20-mile…

Q: 42.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 136…

Q: A student pulls a 2.54 kg box from rest 3.80 m on a flat surface by a rope. (a) What is the work…

A: mass of box is given m =2.54kg , displacement is 3.80 m and time is 2 second. initial velocity Vi is…

Q: A 9.50-g bullet has a speed of 1.30 km>s.(a) What is its kinetic energy in joules? (b) What is…

Q: A mechanic pushes a m=2300 kg car from rest. He does W=4850 J of work in the process. During this…

Q: Superman can throw a ball (mass 145 g) 1000 m/s. Suppose Superman throws a ball straight up into the…

A: Given data *The mass of the ball is m = 145 g = 0.145 kg *The speed of the ball is v = 1000 m/s *The…

Q: (0) How fast (in m/s) must a 3350 kg elephant move to have the same kinetic energy as63.0 kg…

A: NOTE: According to the guidelines we can only solve one question per post(first one if not…

Q: 89. What happens to the kinetic energy of a moving object if the net work done is positive?" a. The…

A: According to the Work-Energy theorem, the force required to move an object at some distance is equal…

Q: A 6.30-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…

Q: You throw a ball into the air. You let the ball go at a height of 1.5 m, and the ball is moving at a…

A: Initial Height , h = 1.5 m Initial velocity , u = 8 m/s Mass , m =0.5 kg To find = a) Initial Total…

Q: m. m A mass m, = 4.1 kg rests on a frictionless table and connected by a massless string over a…

A: Here it is given that a friction less table consists both mass having the value M1= 4.1 kg and…

Q: How fast would a(n) 72 kg man need to run in order to have the same kinetic energy as an

A: the kinetic energy is directly proportional to the product of mass and the square of the velocity.

Q: 1. A 1000 kg car is driving forward with a speed of 25 m/s. It comes to rest in a distance of 100m.…

Q: How much energy is gained by a box of mass 20 kg when a man (a) carrying the box waits for 5 minutes…

Q: A 263 g ball of clay falls onto a vertical spring. The spring constant k = 2.52 N/cm. The clay…

A: Given data: Mass of the clay ball is, m = 263 g = 0.263 kg The spring constant is, K = 2.52 N/cm =…

Q: A worker lifts a 20.0-kg bucket of concrete from the ground up to the top of a 20.0-m tall building.…

A: Mass = m= 20 kg Height = h = 20 m Speed at this height = v = 4 m/s

Concept explainers

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

An accelerating object of mass m-14 kg is fired
with an initial speed vi-2 m/s at a starting point. If
its kinetic energy at its final destination is K.E=147 J.
What is the resultant work (in joules) done on the
object?
A. 919
B. 1119
C. None
D. 119
E. 619
Next page
Previous page

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates.
A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?
An 8.0-g bullet has a speed of 800 m/s. (a) What is its kinetic energy? (b) What is its kinetic energy if the speed is halved?
Suppose a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30 of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is about 140 Mi/gal.) (a) What is the magnitude of the force exerted to keep the car moving at constant speed? (b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?
A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30s?
“ E=K+Uconstant is a special case of the work energy theorem.” Discuss this statement.
A 100 — kg man is skiing across level ground at a speed of 8.0 m/s when he comes to the small slope 1.8 m higher than ground level shown in the following figure. (a) If the skier coasts up the bill, what is his speed when he reaches the top plateau? Assume friction between the snow and skis is negligible. (b) What is his speed when he reaches the upper level if an 80 — N frictional force acts on the skis?
A single force F(x)=4.0x (in newtons) acts on a 1.0-kg body. When x=3.5 m, the speed of the body is 4.0 m/s. What is its speed at x = 2.0 m?
An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow? (b) How much work does the archer do on the string in drawing the bow?
A 200-g steel ball is tied to a 2.00m “massless” string and hung from the ceiling to make a pendulum, and then, the ball is brought to a position making a 30 angle with the vertical direction and released from rest. Ignoring the effects of the air resistance, find the speed of the ball when the string (a) is vertically down, (b) makes an angle of 20 with the vertical and (c) makes an angle of 10 with the vertical.
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.Oc below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force? (c) What is the work done on the cart by the shopper? (d) Find the force the shopper exerts, using energy considerations. (e) What is the total work done on the cart?