20. A 1 kg block is placed on a rough (0.1) 37 incline. Theblock is released from rest. What is the work done in J by thenormal force after the block slides down the incline a distanced=1 m?(a) -0.8(b) 0.0(c) 3.221. A 2 kg projectile is fired from ground level at an angle fo witha kinetic energy K-200 J. If the projectile has a kinetic energyK=140 J at its maximum height (hmar), what is the value of hazin m?(a) 3(b) 4(c) 5(d) 5.2(d) 6(e) 6.0111(e) 7d37Amar

Name: 20. A 1 kg block is placed on a rough (0.1) 37 incline. Theblock is r
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: 20. A 1 kg block is placed on a rough (0.1) 37 incline. Theblock is released from rest. What is the work done in J by thenormal force after the block slides down the incline a distanced=1 m?(a) -0.8(b) 0.0(c) 3.221. A 2 kg projectile is fired from g

According to guidelines we need to solve only first question kindly repost other questions in the…

Science

Physics

20 A 1 kg block is placed on a rough (-0.1) 37 incline. The block is released from rest. What is the work done in J by the normal force after the block slides down the incline a distance d=1 m? (a) -0.8 (b) 0.0 (c) 3.2 (d) 5.2 (e) 6.0 m 37"

20 A 1 kg block is placed on a rough (-0.1) 37 incline. The block is released from rest. What is the work done in J by the normal force after the block slides down the incline a distance d=1 m? (a) -0.8 (b) 0.0 (c) 3.2 (d) 5.2 (e) 6.0 m 37"

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

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?
Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.
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?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance?
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 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface with K=0.50 . Find the work done over a distance of 10 cm by (a) the horizontal force, (b) the frictional force, and (c) the net force. (d) What is the change in kinetic energy of the box?
Calculate the power output needed for a 950-kg car to climb a 2.00 slope at a constant 30.0 m/s while encountering wind resistance and friction totaling 600 N.
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?
A force F = (6i 2j) N acts on a panicle that under-goes a displacement r = (3i + j) m. Find (a) the work done by the force on the particle and (b) the angle between F and r.
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?
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 25.0° 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?