Review later 2. If a block has no unbalanced force acting on it, the magnitude of the block's acceleration is
1. zero
2. decreasing
3. increasing
4. constant, but not zero
Review later

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

Can anyone plz answer any of these. even if its one it will

Why does magnet 5 float above magnet 4