Question

1.
In the following situations, identify the agent exerting the force. Also, state
the effect of the force in each case.
(a) Squeezing a piece of lemon between the fingers to extract its juice.
(b) A person diving into a swimming pool.
(c) A labourer moving a loaded cart.
(d) A car coming to rest once its engine is switched off.
(e) An athelete making a high jump to clear a bar kept at a certain height.​

Answer 1

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a. Squeezing a piece of lemon between the fingers to extract its juice.

• Agent - Fingers
• Effect of the force - The effect of force is the lemon juice being expelled by squeezing.

b. A person diving into the swimming pool.

• Agent - Water
• Effect of the force -

1. Change in speed.
2. Change in direction.
3. Water is smashed out.

c. A labourer moving a loaded cart.

• Agent - The labourer.
• Effect of the force - Change in state of motion.

d. A car coming to rest once its engine is switched off.

• Agent - Car
• Effect of force - Change in speed.

e. An athelete making a high jump to clear a bar kept at a certain height.

• Agent - Athelete
• Effect of force - Change in motion.

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