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Standard X

Physics

Apparent Weight

A ball of mas...

Question

A ball of mass $0.5 k g$ moving with a velocity of $2 m / s$ strikes a wall normally and bounces back with the same speed. If the time of contact between the ball and the wall is $1$ $millisecond$ , the average force $in N$ exerted by the wall on the ball is

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Solution

$Δ p = 2 m v$

$F = \frac{Δ p}{Δ t}$

$= \frac{2 m v}{Δ t}$

$\frac{2 \times 0.5 \times 2}{10^{- 3}}$

$= 2000 N$

Final answer: $2000 N$

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Apparent Weight

Standard X Physics

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A ball of mass 0.5 kg moving with a velocity of 2 m/s strikes a wall normally and bounces back with the same speed. If the time of contact between the ball and the wall is 1 millisecond, the average force in N exerted by the wall on the ball is

Δp=2mv F=ΔpΔt =2mvΔt 2×0.5×210−3 =2000 N Final answer: 2000 N

A ball of mass $0.5 k g$ moving with a velocity of $2 m / s$ strikes a wall normally and bounces back with the same speed. If the time of contact between the ball and the wall is $1$ $millisecond$ , the average force $in N$ exerted by the wall on the ball is

$Δ p = 2 m v$

$F = \frac{Δ p}{Δ t}$

$= \frac{2 m v}{Δ t}$

$\frac{2 \times 0.5 \times 2}{10^{- 3}}$

$= 2000 N$

Final answer: $2000 N$