Question

Does a body have acceleration in the following situations?
Why?
1,a body travelling along a straight line with uniform velocity
2,a body travelling along a straight line with non-uniform velocity
3,a body travelling along a circular path with uniform speed
4,a body travelling along a circular path with non-uniform Speed​

Answer 1

ANSWER WITH EXPLANATION:-

The rate of change of velocity is acceleration.

1.)A body travelling along a straight line with uniform velocity will have zero acceleration becoz the object covers equal displacements in equal amounts of time without changing its direction.

2.)A body travelling along a straight line with non uniform velocity will have acceleration becoz the object covers unequal displacements in equal intervals of time.

3.)When an object moves along a circular path,its direction of motion keeps changing continuously.The velocity changes due to continuous change of direction and thus the motion along a circular path is said to accelerated.

4.)A body travelling along a circular path with non uniform speed will have acceleration.

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Answer 2

Answer:

1. Yes

2. No

3. Yes

4. Yes

Explanation:

Acceleration is defines as the rate of change of velocity with respect to time.

1. A body travelling along a straight line with uniform velocity: In this case, there is no acceleration as the object covers equal displacements in equal amounts of time and direction is not changing at all.

2. A body travelling along a straight line with non-uniform velocity: Here, body will have acceleration as the object covers unequal displacements in equal intervals of time.

3. A body travelling along a circular path with uniform speed: Acceleration is produced as object moves along a circular path, its direction of motion keeps changing continuously. The velocity changes due to continuous change of direction is produced and hence the motion  is said to accelerated along a circular path.

4. A body travelling along a circular path with non-uniform Speed​: body travelling along a circular path with non uniform speed will have acceleration.

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