Which of the following situation is not possible?

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An object with a constant acceleration but with zero velocity.

An object is moving with acceleration but uniform speed.

An object is moving in a certain direction with acceleration in the perpendicular direction.

None of these

answer is B.

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Detailed Solution

An object is moving in a certain direction with acceleration in the perpendicular direction is not possible. Let’s see all three possible situations,
1)      An object with a constant acceleration but with zero velocity
Acceleration is defined as a change in velocity. The vertical motion of an object is one example of this. When an object is thrown upwards to its maximum height, its velocity becomes zero, but it continues to accelerate at a constant rate. Gravity is responsible for constant acceleration.
2)      An object is moving with acceleration but uniform speed
When considering a body in uniform circular motion, the direction of motion is always along the tangent. The speed is constant here. Because velocity is a vector quantity, it changes as the body's direction changes. Because velocity changes produce an acceleration, as velocity changes, acceleration is produced. As a result, we can say that an object moves in a uniform circular motion with constant speed and acceleration.
3)      An object is moving in a certain direction with acceleration in the perpendicular direction.
Consider an object in a circular motion. When an object moves in a circular motion, its path follows the tangent. The body's direction is always perpendicular to its acceleration. However, its acceleration is in the direction of the circle radius. When an object moves in a circular motion, the direction of motion and acceleration are mutually perpendicular.

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