A box moves 20 mblankhorizontally as a force F= 20 Nblankis applied downward. What is the work done on the box by F during the displacement?

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?

Give the relation of resistance of wire with its length and thickness

18. a 6.7 kg object moves with a velocity of 8 m/s. what's its kinetic energy? a. 26.8 j b. 167.5 j c. 53.6 j d. 214.4 j