A 1.0 kg block and a 2.0 kg block are pressed together on a horizontal frictionless surface with a compressed spring between them. they are not attached to the spring. after they are released and have both moved free of the spring.
A. the magnitude of the momentum of the heavier block will be greater than the magnitude of the momentum of the lighter block.
B. the lighter block will have more kinetic energy than the heavier block.
C. both blocks will both have the same amount of kinetic energy.
D. both blocks will have equal speeds.
E. the heavier block will have more kinetic energy than the lighter block.

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s