A particle moves from a point →r1=(2m)→i+(3m)→j to another point →r2=(3m)→i++(2m)→j during which a certain fore→F=(5N)→i+(5N)→j acts on it. Find the work done by the force on the particle during the displacement.
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Q2
Impulse of the force exerted by A and B during the collision, is equal to
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Q3
Two balls A and B having masses 1kg and 2kg, moving with speeds 21m/s and 4m/s respectively in opposite direction, collide head on. After collision A moves with a speed of 1m/s in the same direction, then :
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Q4
A ball of mass m travelling with velocity (3ˆi+4ˆj) m/s receives an impulse J=−(2mˆ)i N-s. The magnitude of velocity of the ball immediately after receiving impulse is
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Q5
A cricket ball of mass 500 gm strikes a bat normally with a velocity 30 m/s and rebounds with a velocity 20 m/s in the opposite direction. The impulse of the force exerted by the ball on the bat is: