Force, Motion & Gravity MCQs with Answers

When milk is churned, what force causes the cream to separate from it?

• A.Gravitational Force
• B.Centrifugal Force
• C.Frictional Force
• D.Magnetic Force

A body of mass 10 kg is falling through a viscous liquid and has reached its terminal velocity. The net force on the body will be _?

• A.0 N
• B.10 N
• C.98 N
• D.100 N

The range of a projectile is maximum when it is projected at an angle of ?

• A.30°
• B.60°
• C.45°
• D.90°

If A = B + C and A, B, C have scalar magnitudes of 5, 4, 3 units respectively, then the angle between vector A and vector B is _?

• A.Cos⁻¹ (3/5)
• B.Sin⁻¹ (4/5)
• C.Cos⁻¹ (4/5)
• D.Tan⁻¹ (4/3)

As we go below the surface of earth, the value of acceleration due to gravity (g) _?

• A.Increases
• B.Decreases
• C.Remains constant
• D.First increases then decreases

Scalar quantities have and a suitable unit.

• A.Direction
• B.Magnitude
• C.Both magnitude and direction
• D.None of these

Which of the following is an equation of motion?

• A.P = VI
• B.F = ma
• C.E = mc²
• D.V = u + at

Escape velocity on Earth is 11.2 km/s. What would be the escape velocity on a planet whose mass is 1000 times and radius is 10 times that of Earth?

• A.11.2 km/s
• B.112 km/s
• C.35.4 km/s
• D.354 km/s

Which simple machine is used in raising the flag?

• A.Lever
• B.Inclined plane
• C.Pulley
• D.Wheel and axle

A car accelerates from 0 to 60 km/h in 10 seconds. What is its average acceleration?

• A.2.78 m/s²
• B.6.00 m/s²
• C.1.67 m/s²
• D.0.60 m/s²