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What impluse is needed to stop a ball of mass 200g travelling a velocity 110 kmph |
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Answer» Impulse is DEFINED as the change in momentum that arises due to some APPLIED force under a particular time interval.⇒ ΔP = FΔT⇒ ΔP = m.a.Δt⇒ ΔP = m.Δv According to the question, it is given that a ball of mass 200g (0.2 kg) is travelling with a velocity 110 kmph. Let us first convert the velocity to m/s.⇒ 110 kmph × (5/18) = 550/18⇒ Velocity = 30.56 m/sNow we know that, ball is being stopped. Hence the final velocity would be 0 m/s. Applying it in the formula we get:⇒ ΔP = mΔv⇒ ΔP = 0.2 ( 0 m/s ) - 0.2 ( 30.56 )⇒ ΔP = 0 - 6.112⇒ ΔP = -6.112 Kg.m/sHence the impulse required to STOP the ball is 6.112 Kg.m/s in the opposite direction. |
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