Science test

A unit of force is

A newton

Force is a push or

Pull

Force gravity

Pulls you down

Normal force

Pushes you up

Force of sliding friction

Slows you down

An object is said to be in equilibrium when the net force is

Zero

If the sum of all forces acting in a car is zero, then the car must be stopped or. Moving at a _______ velocity

Constant

____ always acts in a direction that opposes the motion

Friction

Te force exerted on an object by gravity is known as ____

Weight

What is the SI unit of weight

Newton

The normal force always acts down

False

The normal force always acts up

True

The normal force always acts perpendicular at a 90 degree angle to the supporting surface

True

If an object with a _________ force acting on it may gain speed, lose speed, or change direction.

Unbalanced or net

If the forces are acting on an object is such a way that it does not accelerate, the object is said to be in _______

Equilibrium

How to find the net force acting on an object

Add up all the forces

As an object increases its speed, its air resistance

Increases