1.

A body of mass 2 kg collides with a wall with speed 100 m/s and rebounds with the same speed. If the time of contact was 1/50 s, the force exerted on the wall is:

A.  8 N
B.  \[\text{2}\times \text{1}{{0}^{\text{4}}}\text{ N}\]
C. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
D.  \[{{10}^{4}}\,N\]
Answer» C. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)


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