1.

A mass of 100 g strikes the wall with a speed of \[\text{5 m }{{\text{s}}^{-1}}\] at an angle as shown in figure and it rebounds with the same speed. If the contact time is \[2\times {{10}^{-3}}s,\] what is the force applied by the wall?

A. \[\text{250}\sqrt{\text{3}}\,\,\text{N to right}\]
B. \[\text{250 N to right}\]
C. 105
D. \[\text{250 N to left}\]
Answer» D. \[\text{250 N to left}\]


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