hi,
i have 5 questions i need the
complete solutions with their final results. is there anyonecouldhelp
me, i would appreciate that.
1)
A 0.12-kg ball is moving at 6 m/s when it is hit by a bat,causingit to reverse direction and have a speed of 14 m/s. What isthechange in the magnitude of the momentum of the ball?
2)
Alex throws a 0.15-kg rubber ball down onto the floor. Theball'sspeed just before impact is 6.5 m/s, and just after is 3.5m/s. Ifthe ball is in contact with the floor for 0.025 s, what isthemagnitude of the average force applied by the floor ontheball?
3)
Lonnie pitches a baseball of mass 0.20 kg. The ball arrives athomeplate with a speed of 40 m/s and is batted straight back toLonniewith a return speed of 60 m/s. If the bat is in contact withtheball for 0.050 s, what is the impulse experienced by theball?
4)
A ball with original momentum +4.0 kg?m/s hits a wall andbouncesstraight back without losing any kinetic energy. The changeinmomentum of the ball is:
5)
A machine gun is attached to a railroad flatcar that rollswithnegligible friction. If the railroad car has a mass of 6.25 ?104kg, how many bullets of mass 25 g would have to be fired at 250m/soff the back to give the railroad car a forward velocity of0.5m/s?
thank you in advance
hi,
i have 5 questions i need the
complete solutions with their final results. is there anyonecouldhelp
me, i would appreciate that.
1)
A 0.12-kg ball is moving at 6 m/s when it is hit by a bat,causingit to reverse direction and have a speed of 14 m/s. What isthechange in the magnitude of the momentum of the ball?
2)
Alex throws a 0.15-kg rubber ball down onto the floor. Theball'sspeed just before impact is 6.5 m/s, and just after is 3.5m/s. Ifthe ball is in contact with the floor for 0.025 s, what isthemagnitude of the average force applied by the floor ontheball?
3)
Lonnie pitches a baseball of mass 0.20 kg. The ball arrives athomeplate with a speed of 40 m/s and is batted straight back toLonniewith a return speed of 60 m/s. If the bat is in contact withtheball for 0.050 s, what is the impulse experienced by theball?
4)
A ball with original momentum +4.0 kg?m/s hits a wall andbouncesstraight back without losing any kinetic energy. The changeinmomentum of the ball is:
5)
A machine gun is attached to a railroad flatcar that rollswithnegligible friction. If the railroad car has a mass of 6.25 ?104kg, how many bullets of mass 25 g would have to be fired at 250m/soff the back to give the railroad car a forward velocity of0.5m/s?
thank you in advance
