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Question

If collision is perfectly inelastic then, what maximum height (from ground) will the combined mass rise?
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  1. 25 m
  2. 18 m
  3. 20 m
  4. 15 m

A
25 m
B
18 m
C
15 m
D
20 m
Solution
Verified by Toppr

Let the collision take place at t sec and s1 and s2 be the distance traveled by the masses just before collision.
Thus we get:
s1=12gt2 and s2=20t12gt2

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