PS Force & Motion Test

Two dogs pull on a rope. One dog pulls with a force of 5N to the left, and the other dog pulls with a force of 3N to the right. What is the result?

• The rope remains in place
• the rope moves to the left
• the rope moves to the right
• the rope has a balanced force applied to it

Tags

NGSS.MS-PS2-2

The amount of matter in an object is called its

• weight.
• mass.
• force.
• balance.

Tags

NGSS.MS-PS1-1

In physical science, a push or a pull is called a(n)

• force.
• acceleration.
• inertia.
• motion.

Tags

NGSS.MS-PS2-1

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.

Tags

NGSS.MS-PS2-2

The tendency of an object to resist any change in its motion is known as

• mass.
• inertia.
• force.
• balance.

What happens when two forces act in the same direction?

• They cancel each other out.
• The stronger one prevails.
• They add together.
• Their sum divided by two is the total force.

Tags

NGSS.MS-PS2-2

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

• friction.
• acceleration.
• inertia.
• gravity.

The force that pulls falling objects toward Earth is called

• gravity.
• free fall.
• acceleration.
• air resistance.

Tags

NGSS.MS-PS2-4

The force of gravity on a person or object at the surface of a planet is known as

• mass.
• inertia.
• air resistance.
• weight.

Tags

NGSS.MS-PS2-4

A bus driver drove from Philadelphia to Washington, D.C. He drove the first 100 km in 2 hours, the next 55 km in one hour, and the final 75 km in 2 hours. What is the average speed of the bus throughout the trip? (Remember S=D/T)

• 46 km/hr
• 50 km/hr
• 77 km/hr
• 81 km/hr