Question

In which of these situations is no resultant force required? a. Car changing direction b. Car moving in a straight line at steady speed c. Car slowing down d. Car speeding up

Answer 1

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When a car changes it direction there is no resultant force.

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✭ We say that a force is applied when there is a displacement of something

✭ Here we are asked when there is no resultant force, that is in the options which one isn't consideredto have applied a force

✭ When a car is moving there is a displacement and a force has to be applied to move it

✭ When a car is slowed down even there an opposite force has to be applied to slow it down

✭ Similarly when a car speeds up a force should be applied in the direction of motion so that there is an increase in speed

✭ But when a car just change direction there is no displacement there and hence no resultant force

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Answer 2

Answer:

The answer is option a) Car changing direction

Explanation: