Velocity and Speed

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

• 10 seconds

Tags

NGSS.MS-PS3-1

What is the speed of a cheetah that travels 112.0 m in 4.0 s?

• 0.0357 m/s

• 28 m/s

• 0.036 m/s

• 28.0 m/s

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Pick all of the following that are velocities.

• 4 km/s west

• 5 cm/h south

• 2 mph

• 8 cm/year

• 5 m/s up

A description of the speed and direction of an object's motion

• Velocity

• Speed

• Acceleration

• Vector

describes an object's speed and direction

Tags

11-1

20 m/s west

• Speed

• Velocity

• Acceleration

Tags

NGSS.MS-PS3-1

Which one describes velocity?

• 40 m

• 40 m/s east

• 40 m east

• 40

Aria is driving her car on a highway. She wants to describe the speed and direction of her car's motion. What term should she use?

• Velocity

• Speed

• Acceleration

• Vector

Answer explanation

Velocity is defined as the speed of an object in a given direction, making it the correct choice. Speed only measures how fast an object is moving, while acceleration refers to the change in velocity.

the speed of an object and the direction of its motion ​ (a)  

• velocity

• acceleration

• average speed

• instantaneous speed ​

Tags

NGSS.MS-PS3-1

65mi/hr South is an example of...

• Speed

• Velocity

• Acceleration

• Direction