Author Question: A spring is characterized by a spring constant of 60. N/m. How much potential energy does it store, ... (Read 76 times)

lunatika · **on:** Jul 27, 2018

A spring is characterized by a spring constant of 60. N/m. How much potential energy does it store, when stretched by 1.0 cm?

A) 600. J
B) 6.0 J
C) 60. J
D) 0.3 J
E) 0.003 J

Question 2

When a car, moving at velocity v, collides head on with a light volley ball, initially at rest, the ball bounces off with velocity

A) -v.
B) -4v.
C) -1.5v.
D) -2v.
E) -v/2.