Question

State the effect of force in each of the following cases: A fielder catches a cricket ball.

Answer 1

Answer:

NEWTONS SECOND LAW states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of force.

Explanation:

Answer 2

Answer:

While catching a cricket ball the fielder lowers his hands backwards, so increase the time during which the velocity of the cricket ball decreases to zero. Therefore the impact of force on the palm of the fielder will be reduced.

Explanation:

• To catch a ball, the fielder has to stop the ball. This means, force is applied against the motion of the ball. So, the fielder applied the force on the ball and the ball moves in the direction opposite to the direction of force till the ball comes to rest, . Thus work is negative.
• Imapct of object on any thing can be increased by two ways: 1) Short force in long time 2) Large force in short time
• This large force in short time is impulse.
• Impulse is defined as:
• Integral(F.dt)=change in momentum=impulse
• If the fielder catches the ball the ball exerts a force on the hands of fielder. Since ball carries high momentum stopping it at once will cause a large force to act for a short time that is there is a large impulse acting on hands of fielder. But if the fielder moves his hands backwards he increases time for momentum to reduce. If time is increased impulse decreases therefore there is less imapct and fielder's hands are safe too.

Reference Link

• https://brainly.in/question/13596328
• https://brainly.in/question/12896203