Forces and Motion

Front

What force is responsible for slowing down a rolling ball on the ground?

Back

Friction is the force that opposes the motion of an object, causing it to slow down.

Front

The greater the mass of an object, the greater the amount of ______ is needed to make it accelerate.

Back

Force is needed to accelerate an object, and it is directly proportional to the mass of the object.

Front

Forces that are exerted on an object which are equal in size but opposite in direction are called?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

In the equation f=ma, what does the 'm' stand for?

Back

In the equation f=ma, 'm' stands for mass, which is the amount of matter in an object.

Front

Why is it harder for the boy in Image B to get down the hill?

Back

Friction makes it harder to move down the hill, as it opposes the motion.

Front

What is the definition of force?

Back

A force is a push or pull acting upon an object, resulting in a change in motion.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) is calculated using the formula a = (final velocity - initial velocity) / time.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is an unbalanced force?

Back

An unbalanced force results in a change in the motion of an object, as the forces acting on it are not equal.