Question

Kinematics, Forces
17
10 m/s
A light particle moving horizontally with a
speed of 12 m/s strikes a very heavy block 1
moving in the same direction at 10 m/s.
The collision is one-dimensional and
elastic. After the collision, the particle will
(a) move at 2 m/s in its original direction
(b) move at 8 m/s in its original direction
(c) move at 8 m/s opposite to its original direction
(d) move at 12 m/s opposite to its original direction
​

Answer 1

d.move at 12m/s opposite to its original direction.

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