If a tennis racket strikes a ball (m = 60.0 g; v = 65.0 m/s) for a period of what force does the tennis racket apply to the ball? what is the impulse of this interaction?

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

When does your body conduct current more readily?

What object a collides with object b and bounces back its final momentum is?