Unit 6 Review

What is the formula to calculate speed?

• Speed = time/distance
• Speed = distance/time
• Speed = distance x time
• Speed = time x distance

Tags

NGSS.HS-PS4-1

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Tags

NGSS.HS-PS2-1

Can be measured in meters per second (m/s)

• Distance
• Time
• Speed
• Acceleration

Tags

NGSS.HS-PS4-1

What is velocity?

• the quickness of an object
• the location of an object
• acceleration
• speed in a specific direction

Calculate the average speed (in meter/sec) if a cheetah runs 180 meters in 10 seconds.

• 198 m/sec
• 170 m/sec
• 12 m/sec
• 18 m/sec

Of the following, which is a vector?

• Mass
• Time
• Speed
• Velocity

Acceleration is defined as the CHANGE in 

• time it takes for one place to move to another place. 
• velocity of an object.
• distance divided by the time interval 
• velocity divided by the time interval 

Acceleration only takes place when things speed up. 

• True
• False

Tags

NGSS.HS-PS2-1

In each of the following cases, determine where the car has no acceleration ?

• A car shortly after a stoplight turns green.
• A car approaching a red light
• A car with the cruise control set at 80 km/h
• A car turning a curve at a constant speed

Tags

NGSS.HS-PS2-1

A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?

• -7.5 m/s
• -7.5 m/s²
• -0.5 m/s²
• 7.5 mi//hr

Tags

NGSS.MS-PS2-2