Physics Review

A roller coaster accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

Tags

NGSS.MS-PS2-2

Acceleration is a change in ________. 

• direction 
• speed 
• velocity 
• distance 

Tags

NGSS.HS-PS2-1

The catapult is an example of which of the following simple machines?

• lever
• wedge
• pulley
• wheel and axle

The force that pulls down on the projectile from a catapult is called ___________.

• Newton
• velocity
• gravity
• kilogram

A newton is a measure of _____________.

• distance
• mass
• force
• time

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

Tags

NGSS.MS-PS3-1

What is a catapult?

• A catapult was a simple machine. It was used to throw heavy objects at the enemy with great force.

• A time machine

• A fruit

• A flower

Who built the first catapult?

• Athena

• The Greek Dionysius the Elder of Syracuse

• Hercules

• Mr. Wesley

What is force?

• a color

• star wars

• any interaction that, when unopposed, will change the motion of an object

• an accident

The term “projectile” means..

• a ping pong ball

• an object that is launched or thrown, usually in the air, by a force

• an object that orbits around the earth

• a small catapult