Explanation

 "Meter per second" (m/s) is the standard unit of speed and velocity,

Indicating the distance traveled in meters throughout one second.

It measures how fast something moves (speed) and in what direction (velocity). 

Speed:

Speed is a scalar quantity, meaning it only describes the magnitude (how fast) of an object's movement, measured in meters per second. 

Velocity:

Velocity is a vector quantity, meaning it describes both the magnitude (how fast) and direction of an object's movement, also measured in meters per second. 

Explanation

Newton's first law of motion is also called as Law of inertia.

• Inertia is the ability of a body by virtue of which it opposes a change.
  
• According to Newton’s first law of motion, an object will remain at rest or in uniform motion in a straight line
• unless acted upon by an external force.
  • The inertia of rest: When a body is in rest, it will remain at rest until we apply an external force to move it. This property is called inertia of rest.
  • The inertia of motion: When a body is in a uniform motion, it will remain in motion until we apply an external force to stop it. This property is called inertia of motion.

Explanation

A star with an initial mass more than five times that of the Sun ends its life as a black hole after a supernova explosion.

Its gravitational pull becomes so strong that not even light can escape.

Explanation

When an elevator accelerates downward, the normal force (apparent weight) decreases.

Thus, the person feels lighter than their actual weight.

Explanation

The north pole of a magnet is usually painted red for easy identification.

The south pole is typically painted blue.

Explanation

Insulators are materials that resist the flow of heat (and also electricity), such as wood, rubber, or plastic.

They are used to prevent heat loss or protect from heat transfer.

Explanation

Gears are simple machines made of toothed wheels that interlock and transfer motion or force.

They help change the speed, direction, or torque of a mechanical system.

Explanation

Uranus is the planet in our solar system that rotates on its side, with an axial tilt of about 98 degrees.

This tilt makes Uranus appear to spin on its side.

It is the seventh planet from the Sun.

It is the third largest planet in our solar system.

It is very cold and windy.

It is surrounded by faint rings, and more than two dozen small moons.

Explanation

The formula for Intelligence Quotient (IQ) is:

$$text{IQ} = frac{text{Mental Age (MA)}}{text{Chronological Age (CA)}} times 100$$

Explanation

The area 5 degrees north to 5 degrees south of the Equator is known as the Doldrums.

This region experiences calm winds and low pressure, where the trade winds converge.

It often causing minimal wind activity.