Review Unit 02 Force

The force of gravity between a planet and an object on its surface depends upon...

• the mass of the planet

• the mass of the object

• the radius of the planet

• all responses are correct

Tags

NGSS.MS-PS2-4

Two objects move toward each other because of gravitational attraction. As the objects get closer and closer, the force between them______.

• remains constant

• decreases

• increases

• none of these

Tags

NGSS.MS-PS2-4

In the equation F_grav = G m₁  m₂ / d² the symbol G represents...

• gravity

• the gravitational constant

• the acceleration of gravity

• None of these

Tags

NGSS.HS-PS2-4

On Earth, you have a mass of 35 kg. What is your weight in Newtons?

𝑊= 𝑚ass × 𝑔(9.8)

• 323

• 333

• 343

• 353

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Any force that causes an object to move in a circle is called ____ force.

• linear

• centripetal

• gravitational

• frictional

You cannot feel a gravitational force acting between you and a friend because:

• the distance between attracting objects must be very large for gravity to act.

• living things do not exert any gravitational force.

• the mass of a person is not large enough to exert gravitational force that can be felt.

• none of the these are correct

Tags

NGSS.MS-PS2-4

According to the diagram, the direction of the centripetal force on the airplane is directed toward:

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

According to Newton's 3rd Law of Motion, when a hammer strikes a nail, the nail will exert a ____ on the hammer that is _____ to but opposite in direction.

• force; less

• charge; more

• vector; zero

• force; equal

Tags

NGSS.MS-PS2-1

Netforce and direction?

• 3N left

• 5N right

• 5N left

• 3N right

Tags

NGSS.MS-PS2-2

Netforce and direction?

• 3N down

• 3N up

• 7N up

• 7N down

Tags

NGSS.MS-PS2-2