Topic 4 Lesson 1

Multiple Choice

Why is it important to have a reference point when describing the motion of an object?

• It helps to measure speed accurately

• It allows us to determine if an object is moving or stationary

• It makes objects appear larger

• It helps objects move faster

Multiple Select

Which of the following can forces do to an object?

• Start it moving

• Change its direction

• Change its color

• Change its shape or size

Multiple Choice

Which of the following best describes a force?

• A push or a pull

• A type of energy

• A form of matter

• A way to measure speed

Multiple Choice

Which of the following is an example of a contact force?

• Friction

• Gravity

• Magnetism

• Electric force

Multiple Choice

What happens to an object when balanced forces act on it?

• It does not change its motion

• It speeds up

• It slows down

• It changes direction

Multiple Choice

Which of the following best describes what happens when unbalanced forces act on an object?

• The object remains at rest.

• The object's motion changes in speed and/or direction.

• The object moves in a straight line at constant speed.

• The forces cancel each other out.