# Unbalanced forces - deceleration

Language: English
Subject: Natural science > Physics
Age: 12 - 13

Unbalanced forces - deceleration

What is deceleration?

The rate at which an object speeds up

The rate at which an object slows down

The rate at which an object changes direction

The rate at which an object remains stationary

Which of the following is an example of deceleration?

A car speeding up on a straight road

A cyclist maintaining a constant speed

A train moving at a constant speed on a curved track

A ball rolling down a hill

When an object experiences deceleration, what happens to its velocity?

It increases

It decreases

It remains constant

It changes direction

Which of the following is an example of an unbalanced force causing deceleration?

A book sliding on a frictionless surface

A rocket accelerating in space

A ball rolling on a flat surface

A car coming to a stop

Which of the following is true about the net force acting on an object experiencing deceleration?

It is equal to zero

It is greater than zero

It is less than zero

It depends on the mass of the object

What is the relationship between mass and deceleration?

As mass increases, deceleration increases

As mass increases, deceleration decreases

There is no relationship between mass and deceleration

Deceleration is inversely proportional to mass

Which of the following statements is true about deceleration?

It is always negative

It is always positive

It can be positive or negative

It is always zero

Which of the following factors affect the deceleration of an object?

Mass and velocity

Force and distance

Time and energy

Temperature and pressure