Question

The angle between instantaneous displacement and acceleration during the retarded motion is

Answer 1

Answer:

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Step-by-step explanation:

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The angle between velocity and acceleration during the fall of projectile is 0°< θ < 90°. In uniformly retarded motion , acceleration always act in a direction opposite to the velocity.

Hence angle between between instantaneous velocity and acceleration is 180 degree....

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Answer 2

Concept Introduction:

The acceleration of the particle is directed in the opposite direction to its displacement as it slows down and comes to rest.

Given, instantaneous displacement and acceleration.

To find, the angle between instantaneous displacement and acceleration during the retarded motion.

Solution:

During a projectile's descent, velocity and acceleration are at an angle of $0$° to $90$°. Acceleration always acts in the opposite way to the velocity in evenly delayed motion.

Hence angle between instantaneous velocity and acceleration is $180$ degree.

Final Answer:

The final answer is $180$°

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