Question

a cricket ball of mass is 100g is moving with a velocity of 10m/s and is hit by a bat so that it turns back and moves with a velocity of 20m/s .Find the impulse and the force if the force acts for 0.01sec.​

Answer 1

Answer:

$\displastyle{Impulse=1 \ N \ sec}\\\\\displastyle{F=-100 \ N}$

Explanation:

$\displastyle{Given \ ;}\\\\\displastyle{mass=100 \ g \ or \ 0.1 \ kg}\\\\\displastyle{Initial \ velocity(u) = 10m/sec}\\\\\displastyle{Final \ velocity(u)=20m/sec}\\\\\displastyle{We \ know}\\\\\displastyle{Impulse = Force\times time}\\\\\displastyle{It \ can \ be \ write \ as}\\\\\displastyle{Impulse=m(v-u)}\\\\\displastyle{Impulse=0.1(20-10) \ N \ sec}\\\\\displastyle{Impulse=1 \ N \ sec}$

$\displastyle{Now \ Force \ for \ 0.01 \ sec}\\\\\displastyle{F=-\dfrac{I}{t}}\\\\\displastyle{F=-\dfrac{1}{0.01}}\\\\\displastyle{F=-100 \ N}$

Minus sign show force acting in opposite direction .

Answer 2

Answer:

Refer to the attachment.

Hope this helps

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