BCA: 6th Grade: Science: Balance and Unbalanced Forces

Front

What is the force that opposes the motion of two surfaces that are in contact?

Back

Friction

Front

How is speed defined in physics?

Back

Speed is a way of measuring how quickly something is moving or being done.

Front

What does Newton's third law of motion state?

Back

For every action, there is an equal and opposite reaction.

Front

What is Newton's First Law of Motion also known as?

Back

The Law of Inertia.

Front

What is an applied force?

Back

A force that is applied to an object by a person or another object.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change the motion of an object, while unbalanced forces cause an object to accelerate.

Front

What happens to an object at rest when no unbalanced forces act on it?

Back

It tends to stay at rest.

Front

What happens to an object in motion when no unbalanced forces act on it?

Back

It tends to stay in motion with the same speed and direction.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

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

Back

Newton (N).