Science review

A place or object used for comparison to determine if another object is in motion is called a

• comparison point
• reference point
• point of view
• motion detector

Speed -

• A measure that gives rate of change and position

• A measure that dissolves to one unit

• A measure of distance an object travels per unit of time.

• A measure of distance an object travels per unit of measurement.

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Speed formula

• S=S X T

• S=TX S

• S=D/T

• S=T/D

Tags

CCSS.6.EE.B.7

A girl on a bike rides down a hill 500 meters long in 50 seconds. What is her speed?

• 100 m/s

• 10 m/s

• 1,000 m/s

• 10 mph

A trip to Florida takes 10 hours. The distance is 816 km. Calculate the average speed.

• 81.6 km/hr

• 81.6 mph

• 82 m/s

• 816 km/h

What is the velocity of a car that traveled a total of 75 kilometers north in 1.5 hours?

• 50 km/hr north

• 50 km/hr south

• 112.5 km/hr

• 112.5 km/hr north

What is the velocity of a plane that traveled 3,000 miles from New York to California in 5.0 hours?

• 600 mi/hr west

• 600 mi/hr east

• 300 mi/hr west

• 300 mi/hr east

Mark slams on the brakes after traveling 25 m/s. It takes him 3 seconds to come to a complete stop. What is his acceleration?

• 8.33 m/s²

• -8.33 m/s²

• 75 m/s²

• -75 m/s²

If Anthony was running for 300 s after starting at rest, what was his final velocity if he had an acceleration of 0.05 m/s²

• .25 m/s

• .01 m/s

• 100 m/s

• 15 m/s

Acceleration occurs when an object changes its speed or ______.

• direction
• force
• inertia
• mass