what will be the speed of cricket ball of maas 2 kg moving with a speed of 120km/h is obstucted by a bat of mass 6kg in opposite direction with the speed of 150km/h before coming to rest?
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Answer:
Here, m=150 g=0.15 kg,
t=0.001 s,
v=126 km/h=35 m/s
Force=
time
change in momentum
=
t
mv−(mv)
=
t
2mv
=
0.001 s)
2(0.15 kg)(35 m/s)
=10500 N=1.05×10
4
N.
Explanation:
A cricket ball of mass 150 g moving with a speed of 126 km/h hits at the middle of the bat, held firmly at its position by the batsman. The ball moves straight back to the bowler after hitting the bat. Assuming that collision between ball and bat is completely elastic and the two remain in constant for 0.001 s, the force that the batsman had to apply to hold the bat firmly at its place would be:
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