A 13 kg ball is dropped from a height of 14 m?  As it falls, air drag does -50 J of work against the ball.  How much kinetic energy (in joules) does the ball have when it reaches the ground? Use g =9.8 m/s2.

Q: How much work do the breaks on a 3200 kg car need to do in order to slow it from 30 m/s to 20 m/s?

A: Given mass m=3200Kg V1=30m/s V2 = 20m/s According to work energy theorem work done by the car is…

Q: A 67 kg yak has an average power output of 200 W. How long can a yak climb a 3km high mountain?…

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Q: You want to drop a ball of weight 10.0 N into free fall from rest from a certain height above the…

A: The weight of the ball,

Q: A child of mass m = 23 kg slides down a slide of height h = 2.7 m without friction. Let…

A:

Q: An archer pulls his bow string back 0.40 m by exerting a force that increases uniformly from zero…

A: displacement of string pulled by archer, s = 0 40 m Initial force applied, Fi = 0  Final force, Ff =…

Q: What average power does a 1,565 kg car need to go from 0 to 12.6 m/s in 6.86 seconds? Assume a…

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Q: A tennis ball of mass m = 0.097 kg is thrown straight up with an initial speed v0 = 14 m/s. Let the…

A: mass of ball (m) = 0.097 kg Initial upwards speed (vo) = 14 ms

Q: From what height would an automobile have to fall to gain the kinetic energy equivalent to what it…

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Q: A 2.0-kg potato has been launched out of a potato cannon at 9.0 m/s. What is the kinetic energy? If…

A: mass, m = 2 kg, velocity, v = 9 m/s , height, h = 4 m

Q: A 20.0 kg crate, initially at rest, slides down a ramp 2.0 m long and inclined at an angle of 20°…

A: solution as

Q: Andy carries a sack of rice on his shoulder by applying a 250N force. Andy moves 8 m horizontally,…

A:

Q: A 1.0 kg baseball is flying at 10 m/s. How much kinetic energy does it have? Potential energy?  a.…

A: Given, Mass, M= 1kg, and velocity, v= 10 m/s.

Q: If A 29-kg child starts from rest and slides down a slide that is 2.6 m high. At the bottom of the…

A: Given parameters :  Mass "m"= 29kg  Height "h"= 2.6m  Final Velocity "v"= 2.5m/s .   Concept :…

Q: A 1700 kg car coasts on a horizontal road with a speed of 23 m/s. a) How much work must be done by…

A: Given data: Mass (m) = 1700 kg Initial velocity (v0) = 23 m/s Final velocity (vf) = 17 m/s Required:…

Q: A 600.0-g box has an acceleration of 5.0 m/s? when it is pulled by a horizontal force across a…

A: Work done is given by:

Q: At what speed does a 1000 kg compact car have the same kinetic energy as a 2.00×10* kg truck going…

A: Given : mass of compact car, mc = 1000 kg             mass of truck, mt = 2.0 × 104 kg…

Q: A 1.00 kg block starts from rest at the top of a 20.0 m long 30.0 degree incline. Its kinetic energy…

A: Given:Mass of block, m = 1 kgIncline angle, θ = 30°Kinetic energy, K.E = 98 J

Q: when released from rest, a150 g block slides dewn the path shown below, reaching the bottom with a…

A: Given data *The mass of the block is m = 150 g = 150 × 10-3 kg *The final speed of the block is v =…

Q: The steps of a flight of stairs are 20.0 cm high (vertically).If a 62.0-kg person stands with both…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Andy carries a sack of rice on his shoulder by applying a 250N force. Andy moves 8 m horizontally,…

A:

Q: A 135g Frisbee is thrown from a point 1.05 m above the ground with a speed of 12.00 m/s. When it has…

A: Given m=135g H1=1.05m H2=2.50m V1=12.00m/s V2=10.4831m/s   Work done on the Frisbee can be defined…

Q: A 5.0-kg rock falls off of a 10 m cliff. If air resistance exerts a force of 10 N, what is the…

A: mass, m = 5 kg  height, h = 10 m resistive force, f = 10 N  initial velocity, u = 0 m/s

Q: an 8 kg block is released from rest with v1= 0m/s. The block moves down a distance of 1.6 meters on…

A: mass = 8 kg initial speed = 0 m/s distance along the incline = 1.6 m angle of incline = 40 degree…

Q: A 5.0-kg cart is moving horizontally at 4.0 m/s. In order to change its speed to 6.0 m/s, the net…

A: Given: Mass of cart m=5.0 kg Initial speed u=4.0 m/s Final speed v=6.0 m/s To find net work done in…

Q: Please show work

A: Given,

Q: A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 2.00 m above the…

A: mass=m=0.7 kg initial height= h=2 m final height=h'=3.1 m initial speed=v=7.8 m/s final speed=v'=3.4…

Q: How much work (in J) is required to move a box that weighs 13 kg upward by 65 cm? Use the fact that…

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Q: A stone with a mass of 2.40 kg is moving with velocity (5.20î – 1.80ĵ) m/s. (HINT: v2 : () What is…

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Q: Starting from rest, an 1800 kg car rolls down a hill 22 m high. It reaches the bottom going 15 m/s.…

A: Mass of car (m)= 1800 kg Height of hill = 22 m Velocity at bottom of the hill = 15 m/s

Q: How much work must you do to push a 13 kgkg block of steel across a steel table at a steady speed of…

A: Given: The mass of the block is 13 kg. The constant speed of the object is 1.3 m/s. The coefficient…

Q: A 2kg steel sphere is dropped from a height ʼn and, when it hits the ground, its kinetic energy is…

A:

Q: Help me please

A: mass of beam (m) = 425 kg distance moved (d) = 117 m acceleration (a) = 1.8 ms2

Q: A body of mass 20 kg is lifted up through a height of 4 m. How much work is done? (take g = 9.81…

A: Given data,                    Mass, m = 20 kg                   height lifted, h = 4 m         Only…

Q: A bag of wheat weighs 200 kg. To what height should it be raised so that potential energy is 9800 ?…

A: The answer is below

Q: A 33.00 kg block starts from rest at the top of a 23.0 m long 30.0° incline. Its kinetic energy at…

A: Working formula Work done by friction=Potential energy of the block at the top - Kinetic energy of…

Q: A bodybuilder lifts a 350 N set of weights from ground level to a position over his head, a vertical…

A: Step 1Work done by a system iswhere F is the force and d is the distance travelled by the system

Q: A truck has a gross weight of 1.0 x 106 N. Assuming that the concrete road has a coefficient of…

A:

Q: A leaky bucket, which weighs 5 N empty and initially has 40 N worth of water in it, is lifted into…

A: Given

Q: C7 15.) A baseball (mass = 145 g) is thrown straight upward with kinetic energy 10.15 J. (a) When…

A: Given Data: The mass of a baseball is, m=145 g The initial kinetic energy of a baseball is,…

Q: A 10 kg barbell is rolling down a hill. There is no friction or air resistance acting on it, only…

A: Mass of the barbell is m = 10 kg Initial speed is u = 2 m/s Final speed is v = 7 m/s The only force…

Q: "A toy rocket, weighing 10 N, blasts straight up from ground level with a kinetic energy of 40 J. At…

A:

Q: A 5.0 kg object is moving at 2.29 m/s? By what factor does its kinetic energy change if its speed…

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Q: A 1.5 kg hockey puck initially moving at 4.9 m/s slides 12 m along the ice before coming to rest.…

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Q: A ball with a mass of 2.20 kg is moving with velocity (5.60î – 1.20j) m/s. (HINT: v2 v.) = V. (a)…

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Q: A 1.7 kg mass starts from rest at point A and moves along the x-axis subject to the potential energy…

A: In this question we have to find the speed of the mass at points B, C and D. Please give positive…