cambridge science book 8 lower secondary unit 3

a push or a pull

• force

• balanced

• opposite

Equal forces acting on an object in opposite directions

• balanced

• direction

• unbalanced

reduce the speed of

• slow down

• direction

• unbalanced

a course along which someone or something moves.

• direction

• unbalanced

• balanced

Forces that produce a nonzero net force, which changes an object's motion

• unbalanced

• balanced

• opposite

to increase speed

• speed

• change direction

• analogy

When a force acts at an angle against a moving object, then the object will ______________________.

• change direction

• analogy

a compararison of two different things that are similar in some way

• analogy

• unit

• speed

a standard quantity in terms of which other quantities may be expressed.

• unit

• speed

the distance an object travels per unit of time

• speed

• metres

• per

• second