4.6 j more. To get this take 7 and multiply it by 3.5 to get 24.5 take the x which is what you’re looking for and multiply it by the 2.1 to get 2.1x. Take 24.5 and divide it by 2.1 x and get 11.6. Subtract 11.6 by 7 and get 4.6
22.5 J
Explanation:
Given:
x = 3 m

The spring potential energy
is


Answer: holding the ball in the air without moving it
Explanation:
When the ball goes up it’s potential energy