Average Speed and Velocity

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

Velocity is both ____ and _____.

• speed , direction

• direction, mass

• volume, density

• numbers, direction

Which of the following represents a velocity?

• 40 m
• 40 m north
• 40 m/s
• 40 m/s north

What is the speed of a cheetah that travels 112.0 m in 4.00 s?

• 0.0357 m/s

• 28 m/s

• 0.036 m/s

• 28.0 m/s

Tags

NGSS.MS-PS3-1

Two horses are running in a field.  The gray horse runs 12 m/s north.  The black horse runs 12 m/s east.  
Which is true about their motions?

• Equal speeds.
• Equal velocities.
• Equal distances.
• Equal displacements.

How do you calculate velocity?

• Distance divided by time.
• Displacement divided by time.
• Speed multiplied by time.
• Displacement divided by velocity.

A car moves a distance of 1000 m with an average speed of 28 m/s.   Calculate the time.

• 36 seconds
• 28,000 seconds
• 28 seconds
• 972 seconds

Which of these choices is the formula for average speed?

• 
• 
• 

Displacement and Distance have the same magnitude if:

• They are both the shortest distance between the same two points.

• They never are equal.

• They have the same direction.

• If they have the same number of significant digits.

Usually, magnitude is a number, while direction is not.

• True

• False