Gravity #3

Who developed the theory of gravitation?

• Newton
• Galileo 
• Einstein

Gravity on Earth pulls all objects at a rate of....

• 5.8 meters per second squared
• 7.8 meters per second squared
• 9.8 meters per second squared

If you drop the two balls from the same height, which would hit the ground first?

• Basketball
• Tennis ball
• Both would hit at the same time

You are in a car and hit the gas. You feel your body move back into the seat. You are ___________.

• Approaching Light speed

• Accelerating

• Under Mass

Where did Galileo test his hypothesis about objects falling at the same rate?

• Leaning tower of Pisa
• Stonehenge
• Under an apple tree

What is gravity?

• A type of rock
• A type of plate boundary
• A force that attracts objects because of their mass.

You drop a bowling ball and a feather in a vacuum that takes out all the air out of the chamber. Which would fall fastest?

• Bowling ball
• Feather
• Both would fall the same

Where is air resistance highest?

• Near the surface (ground)
• In the upper atmosphere

___________is a force that acts against the motion of objects in the air.

• Terminal velocity
• Gravity
• Air resistance

You drop a rock off a cliff and you hear it hit the ground in 3 seconds. About how deep is the cliff?

• About 10 meters
• About 20 meters
• About 30 meters
• About 40 meters