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.

Aman pushes on a trunk with a force of 250 newtons. the trunk does not move. how much positive work is done on the trunk? 0.0 j -250 j 250 j 125 j

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)

Which planets are visible without a telescope