Momentum and CollisionHard
Question
Two objects move in the same direction in a straight line. moves with a constant velocity v1. The other starts at rest and has constant acceleration a. They collide when the second object has velocity 2v1. The distance between the two objects when the second one starts moving is
Options
A.Zero
B.
C.
D.
Solution
For second object
2v1 = 0 + at ; t =
...........(i) 
s1 = s2 + d ;
at2 = ut + d
⇒
a × 
= v1 
+ d ⇒ d = 
= 0
2v1 = 0 + at ; t =
...........(i) s1 = s2 + d ;
at2 = ut + d⇒
a × = v1 + d ⇒ d = = 0Create a free account to view solution
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