Question

kinetic energy of a ball of mass 50g is 10 j . find the speed of the ball

Answer 1

Just use the K.E formula

K.E = 1/2mv²

⇒v= √(2k/m)

m= 50/1000= 0.05kg

k= 10 J

so v=√(20/0.05)= 20 m/s

Answer 2

Answer:

hope this answer will  help you

Explanation:

Just use the K.E formula

K.E = 1/2mv²

⇒v= √(2k/m)

m= 50/1000= 0.05kg

k= 10 J

so v=√(20/0.05)= 20 m/s