JEE Main 2022 · 26 Jul · Shift 2 · Physics Q33

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PhysicsSingle correct+4 / -1Question 33 of 90

A ball of mass 0.15 kg hits the wall with its initial speed of 12 ms $^{-1}$ and bounces back without changing its initial speed. If the force applied by the wall on the ball during the contact is 100 N, calculate the time duration of the contact of ball with the wall.

0.018 s

0.036 s

0.009 s

0.072 s

Answer and worked solution

Official answer: B

Impulse. $\Delta p=0.15\times24=3.6$ N s, so $t=\frac{3.6}{100}=0.036$ s.

(B)

Topics:Impulse and momentum

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JEE Main 2022 · 26 Jul · Shift 2, Physics question 33