The driver of a moving car applies brakes and stops at a traffic signal. Which effect of force can be seen here?

Change in shape

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Change in direction of motion

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Change in speed

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All of the above

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Solution

The correct option is C Change in speed
A force can have the following effects:

Change the state of motion of an object

Change the direction of a moving object

Change the shape and size of an object

In the given case, when the driver applies brakes on a moving car, it changes the car’s speed by slowing it down. However, it does not change the car's shape, mass, or direction.

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