# Can a body have zero velocity and still be accelerating? Give examples.

Answer

Verified

267.8k+ views

**Hint**Acceleration is defined as the rate of change of velocity of an object with respect to time. Whenever there is a change in velocity, the object undergoes an acceleration. So, whenever the magnitude or the direction of the velocity changes, there is a non-zero value of acceleration corresponding to it.

**Step by step solution**

Acceleration is the rate of change of velocity of an object with respect to the time over which this change occurs. It is possible to have a non-zero value of acceleration when the velocity of a body is zero.

This can happen when it goes in a particular direction, and a force which acts in a direction opposite to it, acts upon it. Due to this force, the velocity of the object starts decreasing and continues to decrease until it reaches zero. After this, the object starts moving in the opposite direction (that is in the direction of force). At the point where the velocity becomes zero, only the instantaneous velocity of the body is zero, at any time before or after this time, the object has a non-zero velocity.

This means that the change in the velocity is still taking place when the velocity of the object reaches zero. Therefore, the body is still accelerating.

Example- When a ball is thrown upwards on earth with a constant velocity, the gravitational force of the earth acts on it in the opposite direction. At the highest point, the velocity of the ball becomes zero, after which it starts to fall down. At this point, the velocity of the ball is zero yet its acceleration is equal to $g = 9.8m/{s^2}$.

This property can also be observed in a Simple harmonic motion of a spring or a pendulum. When the maximum displacement is reached, the restoring force takes over and the object starts to accelerate in the opposite direction. At this point too, the velocity of the object is zero but it has some value of acceleration corresponding to the restoring force.

**Note**This case where the velocity decreases continuously, becomes zero and then increases in the opposite direction indicates that a force is acting in a direction opposite to the motion of the object. The point where the object acquires zero velocity is the point where it has the maximum potential energy.

Last updated date: 22nd Sep 2023

â€¢

Total views: 267.8k

â€¢

Views today: 8.67k

Recently Updated Pages

10 Examples of Evaporation in Daily Life with Explanations

10 Examples of Friction in Our Daily Life

What do you mean by public facilities

Difference between hardware and software

Disadvantages of Advertising

10 Advantages and Disadvantages of Plastic

Trending doubts

How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Difference Between Plant Cell and Animal Cell

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

The equation xxx + 2 is satisfied when x is equal to class 10 maths CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Drive an expression for the electric field due to an class 12 physics CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

What is the past tense of read class 10 english CBSE