PHYSICS Assessment 3

What happens when two forces act in the same direction?

• They cancel each other out.

• The stronger one prevails.

• Their strengths are added.

• Their sum divided by two is the total force.

The greater the mass of an object,

• the easier the object starts moving.

• the greater its inertia.

• the more balanced it is.

• the more space it takes up.

The force of gravity on a person or object on the surface of a planet is called

• mass.

• weight.

• terminal velocity

• free fall.

The force that one surface exerts on another when the two rub against each other is called

a. c.

b.. d. .

• friction.

• inertia.

• acceleration

• gravity

Forces can be added together only if they are

• acting on the same object

• unaffected by gravity

• balanced forces

• substantial

Any force that causes an object to move in a circle is called a(n)

• balanced force

• gravitational force.

• unbalanced force

• centripetal force

The overall force on an object after all the forces are added together is called the

• balanced force

• unbalanced force

• net force

• centripetal force

A skydiver with a mass of 70 kg accelerates to Earth at a rate of 9.8 m/s2 due to gravity. What is the force on the skydiver?

• 79.8 Newtons

• 7.14 Newtons

• 0.14 Newtons

• 68.60 Newtons

How many colors are there in the spectrum when white light is separated?

• 6

• 7

• 8

• 9

A Newton is equal to which of the following?

• kilogram-meter per second

• meter per second squared

• kilogram-meter per second squared

• kilogram per meter-second