Which one will produce a change in momentum? a) A car is driving down the road and the driver applies the brakes b) A quarterback dodges a tackle from the defense by changing his direction as he runs (a "juke") c) As you approach the finish line, you start running harder and speeding up d) A rocket is launching into space and losing rocket fuel as it shoots upwards d) All of the above

Aman does 500 j of work pushing a car a distance of 2 m. how much force does he apply? assume there is no friction. a. 250 n b. 1000 n c. 125 n d. 500 n

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.