Q. 93.7( 112 Votes )

State which of the following situations are possible and give an example for each of these:

(a) An object with a constant acceleration but zero velocity.

(b) An object moving in a certain direction with an acceleration in the perpendicular direction.

Answer :

(a) The above given situation is possible. For example, when a ball is thrown up at maximum height, it has zero velocity, although it will have constant acceleration due to gravity, which is equal to 9.8 m/s 2. This situation can be explained by the given graph below

(b) The above given situation can be seen in the following example:

When a car is moving in a circular track, its acceleration is perpendicular to its direction.This situation can be explained by the given graph below.

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