Find the total kinetic energy of a 10 kg object traveling at 5 m/s to the right and a 15 kg object traveling at 10 m/s to the left?

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

Drag each tile to the correct box. tiles bra i sequence

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?