Force, Motion & Gravity MCQs with Answers

The book lying on a table obeys which of Newton's Laws?

• A.Newton's 1st Law
• B.Newton's 2nd Law
• C.Newton's 3rd Law
• D.Newton's Law of Gravitation

The tendency of an object to remain at rest or, if moving, to continue its uniform motion in a straight line is called?

• A.Momentum
• B.Inertia
• C.Acceleration
• D.Force

The drag force acting on a sphere of radius r moving slowly through a viscous fluid is proportional to _?

• A.1/r²
• B.r²
• C.1/r
• D.r

A particle is projected from the ground with kinetic energy E at an angle of 60° with the horizontal. Its kinetic energy at the highest point of its motion will be:

• A.E
• B.E/2
• C.E/4
• D.Zero

For a rigid body that rotates about a fixed axis, the angle swept out by a line passing through any point on the body and intersecting the axis of rotation perpendicularly is called?

• A.Angular velocity
• B.Angular displacement
• C.Angular acceleration
• D.Tangential displacement

First Law of motion gives the definition of?

• A.Inertia
• B.Momentum
• C.Acceleration
• D.Force

If a body falls with a constant acceleration of 9.8 m/s², it means ?

• A.Velocity increases by 9.8 m/s each second
• B.Velocity decreases by 9.8 m/s each second
• C.Distance covered is 9.8 m each second
• D.Speed remains constant at 9.8 m/s

A movable pulley can _?

• A.Decrease the input force
• B.Increase the input force
• C.Change the direction of force only
• D.None of these

The centripetal acceleration of an object moving along a circle of radius r with an angular speed ω is given by the formula _?

• A.a = r · ω²
• B.a = r² · ω
• C.a = r / ω²
• D.a = ω / r²

In simple harmonic motion (SHM), displacement and restoring force are?

• A.Opposite in direction
• B.In the same direction
• C.Perpendicular to each other
• D.Unrelated to each other