A bowling ball of mass 9.7 kg moves in a straight line at 3.51 m/s.?
How fast must a Ping-Pong ball of mass
2.667 g move in a straight line so that the two
balls have the same momentum?
Answer in units of m/s
- MyRankLv 62 months ago
Mass of ball (mb) = 9.7kg
Speed of ball (vb) = 3.51m/sec
Mass of ping - pong ball (mp) = 2.667g = 2.667 x 10⁻³kg
Speed of ping-pong ball (vp) = ?
Here, (Momentum)ball = (Momentum)ping-pong ball
= (mb x vb) = (mp x vp)
= vp = (mb x vb) / mp = 9.7kg x 3.51m/sec / 2.667 x 10⁻³kg
= 34.047kg.m/sec / 2.667 x 10⁻³kg
= 12.76 x 10³m/sec
∴ vp = 12.76 x 10³m/secSource(s): http://myrank.co.in/
- Anonymous2 months ago
Momentum is mass * speed.
Surely you can figure that out.