Answer:
127.12 m/s
Explanation:
From the question,
Kinetic energy of the bowling ball = Kinetic energy of the ping pong ball
1/2mv² = 1/2m'v'²
Where m = mass of the bowling ball, v = velocity of the bowling ball, m' = mass of the ping pong ball v' = velocity of the ping pong ball
make v' the subject of the equation
v' = √(mv²/m')................ Equation 2
Given: m = 7.0 kg, v = 2.45 m/s, m' = 2.60 g = 0.0026 kg
Subtitute into equation 2
v' = √[(7×2.45²)/0.0026]
v' = √16160.57
v' = 127.12 m/s
