Newton's Law of Motion

The greater the mass of an object

• the more space it takes up
• the greater its inertia
• the more balanced it is
• the easier the object is to move

What is the type of friction caused when an object falls through air?

• air resistance

• inertia

• rolling friction

It is more difficult to start a 50-kg box sliding across the floor than a 5-kg box because the 50-kg box has greater

• color

• speed

• inertia

• velocity

The force that happens when two things rub together is called:

• Electricity

• Magnetism

• Friction

• Gravity

When two ring magnets are placed on a pencil, magnet A remains suspended above magnet B, as shown. Which statement describes the gravitational force and the magnetic force acting on magnet A due to magnet B?

• The gravitational force is attractive and the magnetic force is repulsive.

• The gravitational force is repulsive and the magnetic force is attractive.

• Both the gravitational force and the magnetic force are attractive.

• Both the gravitational force and the magnetic force are repulsive.

Which magnet will have the strongest magnetic force?

• A

• B

• C

• D

If the unequal opposing forces are applied to the cart at the same time, what will occur?

• The cart will move to the left.

• The cart will move to the right.

• The cart will alternate between moving left and right.

• The cart will remain stationary.

What change could be made in the setup to increase the amount of force necessary to move the block of wood?

• Pull with two hands

• Make the wood block smaller

• Spray the table with oil to decrease the friction

• Increase the friction of the table by adding sand paper to it

A student put five ring magnets on a pencil. The magnets are labeled 1, 2, 3, 4, and 5. Which two magnets are attracting each other?

• 1 and 2

• 2 and 3

• 3 and 4

• 4 and 5

Which measurements are required to calculate the average speed of a car driving on a road?

• Mass and direction

• Mass and time

• Direction and Time

• Time and Distance