Determine the speed and the direction of the joined trolleys immediately after collision
TrolleyA- 72.0kg was moving towards the west at 5.50m-^¹
TrolleyB- 69.4kg was moving towards the east at 4.50ms‐^¹

An apple is falling from a tree. disregarding air resistance, which diagram shows the free-body diagram of the force or forces acting on the apple?

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.