Force, Motion & Gravity MCQs with Answers

What happens when cornstarch is mixed with water?

• A.It forms a non-Newtonian fluid
• B.It forms a true solution
• C.It forms an immiscible mixture
• D.It forms a supersaturated solution

When an object oscillates with a frequency of 0.5 Hz, what is its time period?

• A.0.5 sec
• B.2 sec
• C.5 sec
• D.1 sec

A man who weighs 60 kg on earth, weighs 61 kg on a rocket as measured by an observer on the earth. What is the speed of the rocket?

• A.4.5 × 10⁶ m/s
• B.3.0 × 10⁸ m/s
• C.4.5 × 10⁷ m/s
• D.2.0 × 10⁷ m/s

If area is reduced, what is the effect on velocity and pressure?

• A.Velocity increases, pressure decreases
• B.Velocity decreases, pressure increases
• C.Both velocity and pressure increase
• D.Both velocity and pressure decrease

The substance just breaks after the elastic limit is?

• A.Ductile material
• B.Elastic material
• C.Malleable material
• D.Brittle material

Mass divided by volume is called _?

• A.Density
• B.Pressure
• C.Weight
• D.Specific gravity

When meteors enter Earth's atmosphere, they burn with light due to _?

• A.Nuclear fusion upon entry
• B.Chemical reaction with ozone
• C.Friction produced by rapid motion
• D.Reflection of sunlight

Which law applies to the motion of an airplane?

• A.Newton's Third Law
• B.Archimedes' Principle
• C.Bernoulli's Principle
• D.Pascal's Law

The measuring unit of pressure is ?

• A.Watt
• B.Newton
• C.Joule
• D.Pounds/Square Inch

Which principle explains the phrase "deep water runs still" in fluid dynamics?

• A.Bernoulli's principle
• B.Pascal's law
• C.Continuity equation
• D.Archimedes' principle