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23 Nov 2019
1) A 1.5 kg playground ball is moving with a velocity of 3.0m/sdirected 30 degrees below the horizontal just before it strikesahorizontal surface. The ball leaves this surface 0.5 slater with avelocity of 2.0 m/s directed 60 degrees above thehorizontal. Whatis the magnitude of the average resultantforce on the ball?
2) a 2.0 kg object moving 5.0 m/s collides with andsticks toan 8.0 kg object initially at rest. Determine thekinetic energylost by the system as a result of thiscollision.
3) A 1.6 kg block is attached to the end of a 2.0mstring toform a pendulum. The pendulum is released from restwhen the stringis horizontal. At the lowest point of itsswing when it is movinghorizontally, the block is hit by a 10 gbullet moving horizontallyin the opposite direction. Thebullet remains in the block andcauses the block to come to rest atthe low point of its swing. Whatwas the magnitude of thebullet's velocity just before hitting theblock?
1) A 1.5 kg playground ball is moving with a velocity of 3.0m/sdirected 30 degrees below the horizontal just before it strikesahorizontal surface. The ball leaves this surface 0.5 slater with avelocity of 2.0 m/s directed 60 degrees above thehorizontal. Whatis the magnitude of the average resultantforce on the ball?
2) a 2.0 kg object moving 5.0 m/s collides with andsticks toan 8.0 kg object initially at rest. Determine thekinetic energylost by the system as a result of thiscollision.
3) A 1.6 kg block is attached to the end of a 2.0mstring toform a pendulum. The pendulum is released from restwhen the stringis horizontal. At the lowest point of itsswing when it is movinghorizontally, the block is hit by a 10 gbullet moving horizontallyin the opposite direction. Thebullet remains in the block andcauses the block to come to rest atthe low point of its swing. Whatwas the magnitude of thebullet's velocity just before hitting theblock?
Keith LeannonLv2
26 Oct 2019
