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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. \[\text{250 N to left}\] | |