2007-03-26 10:52:00 · 2 answers · asked by quetions1 1 in Science & Mathematics ➔ Physics
When you hit a ball, the force F acts during time delta t.
By it the product of mass m and speed v, so mv, grows according to
F x delta t = delta (mv)
Th
2007-03-26 11:04:38 · answer #1 · answered by Thermo 6 · 0⤊ 0⤋
When a player pitches a softball, it has momentum (mass * velocity). When the other player hits the ball with the bat, it changes velocity (velocity will now be in the opposite direction), so its momentum will change. Impulse is the CHANGE in momentum (mass * change in velocity or force * time).
So if a 10kg ball is going in the +X direction with a velocity of 30m/sec, it has a momentum of 300 kg m/sec. If the batter hits it and it rebounds with a velocity of 30 m/sec, it now has a momentum of -300kg m/sec. The impulse, or change in momentum, would be -600 kg m/sec.
2007-03-26 18:03:15 · answer #2 · answered by pedros2008 3 · 0⤊ 0⤋