IST 8TH-SEM. REV PT 1

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = m * a.

Front

What is the formula to calculate force?

Back

The formula to calculate force is F = m * a, where F is force, m is mass, and a is acceleration.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is measured in meters per second squared (m/s²).

Front

What is the relationship between mass and acceleration according to Newton's 2nd Law?

Back

According to Newton's 2nd Law, as mass increases, acceleration decreases if the force remains constant.

Front

What type of radiation from the Sun can cause skin cancer?

Back

Ultraviolet (UV) radiation from the Sun can cause damage to the cells of living organisms, leading to skin cancer.

Front

How can people protect themselves from UV radiation?

Back

People can protect themselves from UV radiation by wearing hats, using sunscreen, and wearing protective clothing.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force in the SI system is the Newton (N).

Front

If a 10 kg object experiences a force of 50 N, what is its acceleration?

Back

The acceleration is 5 m/s², calculated using the formula a = F/m.

Front

What is the net force acting on an object?

Back

The net force is the total force acting on an object after all the forces are combined, taking into account their directions.

Front

What happens to the acceleration of an object if the net force acting on it is doubled?

Back

If the net force is doubled, the acceleration of the object also doubles, assuming mass remains constant.