According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail... A)creates a friction with the hammer
B) disappears into the wood
C) exerts an equal force back on the hammer
D) moves at a constant speed

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?

Which best represents the law of conservation of mass ?

What is the temperature in degrees celsius of a substance with a tempature of 49k