ly too carried away doing physics experiments, crashes his 1200 kg car into to a stationary 1500 kg car.  The resulting pileup pitches forward 1 m after the collision.  Assuming a coefficient of friction of 0.2, what was Mike’s initial velocity?  How much work wa

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A: Given: mass of an object, m = 20 kginitial speed, vi = 3 m/sfinal kinetic energy, KEf = 122 J

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A: Part A The change in kinetic energy is equal to the amount of work done or the amount of energy lost…

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Q: Object A and B have 25 J of kinetic energy. Object B has one-quarter the mass of object A. a.…

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A: Have a look dear

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Q: A force acts on a particle which moves from the origin to point C. The particle can travel along…

A: Given: The work done by the force for each path: WOBC = 50 J, WOAC = 125 J, WOC = 66.7 J.  The work…

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Q: lands on a 10.5 cm thick gymnastics mat. The gymnast strikes the back of his head against the mat…

A: Mass of gymnast (m) = 5 kg Initial speed (v) =7.4 m/s

Q: An accelerating object of mass m=7 kg is fired with an initial speed v;=8 m/s at a starting point.…

A: Given: mass of object m = 7 Kg initial speed vi = 8m/s Final kinetic energy KEf = 369 J To find:…

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A: Given:-   The mass of the ball is m = 145 g  The speed of the ball is v = 40 m/s  The distance that…

Q: A 75 kg person, originally at rest, sleds down a 50 m tall hill and comes to a stop. How much work…

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Q: - Who did more work? Explain

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Q: Construct Your Own Problem - Consider humans generating electricity by pedaling a device similar to…

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Q: A 1.100 kg block slides down a frictionless inclined plane (height 0.800 m), moves across a rough…

A: mass of first block (m) = 1.1 kg Initial height of first block (h) = 0.800 m work done by friction…

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A: The correct answer is B. The work done on the Earth is zero, since the force of gravity is always…

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Q: A student lifts a 2.1-kg physics book to a height of 64 cm and then puts it down to its original…

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Q: The initial velocity of a 3-kg particle is (1 i- 3 j) m/s. After some time, the velocity becomes (4…

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Q: Problem#1:A 11-g bullet has a speed of 26 km/s. a) What is its kinetic energy in joules?

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Q: A 5.0-kg block that initially has a speed of 6.0 m/s is moving in a straight line on a level surface…

A: Given  mass of block(m)=5 kg Initial speed of block (vi)=6.0 m/s final speed of block(vf)=0 work…

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A: Given data: The time dependent force is, Ft=Fc1+e-100t Mass of ball is m=0.10 kg.

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Q: Consider the skateboarder in the Figure. If she has a mass of 55 kg, an initial velocity of 20 m/s,…

A: Mass = 55 kg  Speed at bottom = 20 m/s  Speed at top = 12 m/s  Height = 5 m

Q: A 9.55 kg object is initially traveling at 24.8 m/s. During the next 185 seconds – 263 J of total…

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Q: A 65 kg person rides a 20 kg bicycle at a speed of 11 m/s. The cyclist runs into a parked car and…

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Q: An object is acted on by the force shown in the figure(Figure 1). What is the final position of the…

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Q: The two ropes shown in the bird's-eye view of the figure are used to drag a crate 5.8 m across the…

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Q: Several physical situations are described below. For each situation, simplify the work-energy…

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