Force, Motion & Gravity MCQs with Answers

The projectile and circular motion are examples of motion in _ dimension(s).

• A.One
• B.Two
• C.Three
• D.Four

The particles of solids have:

• A.Vibrational motion only
• B.Translational motion only
• C.Both vibrational and translational motion
• D.Random motion in all directions

An elevator, in which a man is standing, is moving upward with a constant speed of 10 m/s. If the man drops a coin from a height of 2.5 m, find the time taken by it to reach the floor of the elevator. (Take g = 9.8 m/s²)

• A.0.357 sec
• B.0.505 sec
• C.1.020 sec
• D.0.714 sec

The forces acting at a point are called ?

• A.Concurrent forces
• B.Collinear forces
• C.Parallel forces
• D.Coplanar forces

Friction opposes motion between two bodies in contact because of ?

• A.Roughness of surfaces
• B.Smoothness of surfaces
• C.Weight of the bodies
• D.Speed of the bodies

The force which is necessary for rotational motion?

• A.Frictional force
• B.Centrifugal force
• C.Gravitational force
• D.Centripetal force

Which of the following is an example of a vector product of two vectors?

• A.Electric current
• B.Work
• C.Angular momentum
• D.Speed

A simple machine that uses grooved wheels and a rope to raise, lower or move a load is known as?

• A.Lever
• B.Wheel and Axle
• C.Inclined Plane
• D.Pulley

If the net force on a body is zero, then the body will be?

• A.At rest only
• B.Moving with constant velocity only
• C.At rest or move with constant velocity
• D.Always accelerating

The total work done in moving a body along a closed path in a gravitational field is always equal to?

• A.Maximum
• B.Zero
• C.Infinity
• D.Depends on the path length