A CRICKET BALL OF MALL 100G MOVING WITH A SPEED OF 30M/S IS BROUGHT TO REST BY A PLAYER IN 0.03 SECONDS FIND CHANGE IN MOMENTUM?
start: 0.1kg * 30m/s
end: 0
doesn't matter how long it took.
To find the change in momentum, we need to know the initial momentum (which is the momentum of the cricket ball moving at a speed of 30 m/s) and the final momentum (which is the momentum of the ball when it is brought to rest by the player).
Let's start by calculating the initial momentum:
Initial momentum (P₁) = mass × velocity
Given that the mass of the cricket ball is 100 g (or 0.1 kg) and the speed is 30 m/s:
P₁ = 0.1 kg × 30 m/s
= 3 kg⋅m/s
Now, let's calculate the final momentum:
Final momentum (P₂) = 0 (since the ball is brought to rest)
The change in momentum can be calculated using the equation:
Change in momentum (ΔP) = P₂ - P₁
ΔP = 0 - 3 kg⋅m/s
= -3 kg⋅m/s
Therefore, the change in momentum of the cricket ball is -3 kg⋅m/s. Note that the negative sign indicates that the direction of the momentum changed when the ball was brought to rest.