Reference no: EM132787948

1.a) A 12500 kg roller coaster train comes across the top of the first hill that is 57 m high. The roller coaster loses 25000 J of energy due to friction and sound as it goes down the hill. With the energy left, how fast will the roller coaster be moving at the top of a loop 28 m high?

b) A baseball (m = 0.14 kg) traveling at 40 m/s moves a fielder's glove backward 0.2 m when the ball is caught. What was the average amount of force exerted by the ball on the glove?

c) A 22.0 kg child slides down a ramp. At the bottom of the 5.00 m high ramp, the child has speed 2.50 m/s. Find the energy lost due to friction.

d) A 500. kg roller coaster is moving at 1.20 m/s at the top of a 30.0 m high hill. If 80. kJ is lost to heat, what will be the speed of the coaster at the bottom of the hill?

e) A 5.0 kg block sliding freely up a ramp. At the bottom of the ramp, the block has a velocity of 11 m/s. How high up the ramp does the block reach if 75 J is transformed to heat?