Physical Science chapter 11 review

What is the purpose of a frame of reference?

• It helps describe motion more accurately

• Tells us what is going on

• what is a frame of reference

• Butterfly!

—What is the difference between distance and displacement?

• Distance is measured in feet displacement is measured in meters

• There is no difference

• Distance is between two points while displacement is a change in direction

• None of the above

A car in a parking lot is looking for a spot to park in, it first drives forward 10M then backward 3M then forward again 5M. What is the total displacement of the car?

• 18M

• 13M

• 12

• 12M

—A car in a parking lot is looking for a spot to park in, it first drives forward 10M then forward 3M then forward again 5M. What is the total distance driven by the car?

• 18

• 18M

• 13

• 13M

—If you were giving a friend direction to your house should your directions include displacement or distance explain?

• Displacement

• Distance

• Both

• None

—What does velocity describe?

• Speed

• Direction

• Speed and Direction

• none of the above

—What is the difference between average speed and instantaneous speed?

• Average speed is speed over time instantaneous speed is speed right now

• For all intense and purpose they are the same

• the difference between the two in no matter in physics

• they are the same thing

—How can you combine two vectors

• By multiplying them

• By dividing them

• By adding them up

• By subtracting them

Tags

NGSS.HS-PS2-4

•What does a cars speedometer show?

• How fast it is going

• Average speed

• Instantaneous speed

• its RPM

Tags

NGSS.MS-PS3-1

A train travels 200 KM in 3 hours, it picks up some passengers and then travels 500 KM in 6 hours what was the trains average speed?

• 80 MPH

• 77.7 KMH

• 77.7MPH

• 80 KPH