Q.

The projectile motion of a particle of mass 5 g is shown in the figure.The initial velocity of the particle is 52 ms−1 and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points A and B is  x×10−2 kgms−1. The value of x, to the nearest integer , is______

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answer is 5.

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Detailed Solution

Between ‘A’ and ‘B’, horizontal component of momentum remains same. Vertical component of momentum charges from mu sin450 to  −musin450So, charge in momentum is Δp=2musin450=2510−35212    Δp=5×10−2Kg−m/s
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The projectile motion of a particle of mass 5 g is shown in the figure.The initial velocity of the particle is 52 ms−1 and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points A and B is  x×10−2 kgms−1. The value of x, to the nearest integer , is______