Mass (m)=200 grams=0.2 kg, velocity (v1)=10 m/s
The momentum the hockey ball was having when it was going towards the stick
⇒p1=2 kg m/sec
Now, the final momentum (p2) of the ball after being striked by the stick will be :
where v2=5 m/sec
⇒p2=1 kg m/sec
Now the change in momentum will be p2-p1=2-1=1kg m/sec Ans.
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