Class 9 sci

What is the First law of Motion?

• Law of Thermodynamics
• Law of Inertia
• Newton's Second Law
• Law of Gravity

What is the Second law of Motion?

• Law of Thermodynamics

• Law of Inertia

• Newton's Second Law

• Law of Gravity

Who is credited with the discovery of the Law of Gravity?

• Isaac Newton

• Albert Einstein

• Galileo Galilei

• Nikola Tesla

Which law states that for every action, there is an equal and opposite reaction?

• Law of Thermodynamics

• Law of Inertia

• Newton's Third Law

• Law of Gravity

CO₂ can be easily liquified and even solidified because......

• It has a high critical point.
• it has a low melting point and low boiling point.

• It has more force of Attraction

• It is not affected by temperature or pressure.

Under which of the following conditions we can boil water at room temperature?

• Low temperature
• Normal pressure
• High pressure
• Low pressure

What is Displacement?

• the length of shortest distance from initial position to final position of the object.

• Displacement is the speed of an object.
• Displacement is the weight of an object.
• Displacement is the change in position of an object.

One example of scalar quantity?

• Volume
• Speed
• Mass
• Distance

Velocity of an object in uniform circular motion is constant.

• True
• False

A freely falling body is uniformly accelerated Due to gravity

• True

• False