a bullet of mass 20g is fired into a wooden block of mass 4.8g. the block is attached to a string of length 1.5m. the bullet is embedded in the block, causing the block to then swing. if the block reaches maximum height of 0.33m, what was the initial speed of the bullet? Please answer this question
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Answer:4.082m/s
Explanation:m1u1+m2u2=(m1+m2)gh
Where u1 is for the bullet and u2 for the block
U2=0
20u1+0=24.8*10*0.33
20u1=81.84
Thus u1=4.092m/s
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