Question

A 2 kg ball is launched upward and has a kinetic energy of 25 J. Solve for the velocity of the ball as it was launched.(1 point)
Responses

12.5 J
12.5 J

50 m/s
50 m/s

25 J
25 J

5 m/s

Answer 1

Use KE = 1/2 m v^2. So v = sqrt(2·KE / m) = sqrt(2·25 / 2) = sqrt(25) = 5 m/s.