Question

A tennis ball is hit into the wall with a speed of 26 m/s.

If it rebounds with a speed of 24 m/s, how much energy was lost in the collision?


mass of tennis ball = 0.059 kg

A) 6 joules

B) 1 joule

C) 3.0 joules

Answer 1

(1/2)(.059) (26^2-24^2)
=.0295 (2)(48)
around 2.9 Joules

Answer 2

whoops
add 26 + 24 correctly when doing (a^2-b^2) =(a-b)(a+b)
=.0295 (2)(50)
around 2.95 Joules