Question

For Each Question:

- Mark As True or False

- Give Reason

- Prove Your Answer By An Example

1. The magnitude of the average velocity is not the average speed.

2. The magnitude of the instantaneous velocity is the instantaneous speed.

3. The word deceleration means always slowing down.

4. The acceleration of a projectile at the top of its trajectory is zero. While the velocity at the top of the motion of an object thrown upward momentarily goes to zero.

5. The normal force generally has the same magnitude as the gravitational force.

6. The two forces acting on the same object, even if they are equal in magnitude and opposite in direction, cannot be an action–reaction pair.

7. In an infinitesimal time interval, the magnitude of the displacement is equal to the distance traveled by the particle.

8. The description of an object under the effect of forces that balance is covered by Newton’s first law .

9. The gravitational acceleration (g = 9.8 m /s2 ) may be a positive or negative number.

10.There is no single value of the moment of inertia for an object and there is no unique value of the torque.

Answer 1