Gravity and Motion

When an object free falls around another object in space.

• terminal velocity
• projectile motion
• orbit
• rocket science

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A curved path that an object takes when it is near a planet's surface.

• projectile motion
• free fall
• terminal velocity
• orbit

Tags

NGSS.MS-PS2-4

An unbalanced force that causes objects to move in a circular path is called...

• free fall
• terminal velocity
• projectile motion
• centripetal force

this occurs when only gravity is acting on an object

• terminal velocity
• free fall
• projectile motion
• air resistance

Tags

NGSS.MS-PS2-4

When air resistance is equal to the force of gravity an object stops accelerating and has reached what?

• free fall
• terminal velocity
• projectile motion
• centripetal force

If a feather and a hammer are dropped at the same time on the moon, where there is no atmosphere, which one will hit the ground first?

• Neither, there is no gravity on the moon.
• hammer because it has more mass
• feather because it has less mass
• both will hit at the same time

Tags

NGSS.MS-PS2-4

Which of the following does not affect air resistance?

• speed
• shape
• size
• spelling

Why does a ball at ground level move downwards?

• There is no force on the ball
• Gravity pulls the ball toward the ground
• A force pulls the ball in the direction it was thrown
• Forces pull on the ball in both directions

Orbital motion is a combination of forward motion and ...

• frictional resistance
• free fall caused by gravity
• horizontal acceleration
• weightlessness 

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is the acceleration due to gravity on earth?

• 9.8 m/s
• 9.8 m/s²
• 3.14 m/s²
• 3.14 m/s

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5