Speed, Distance, and Displacement

A horse follows a dangling carrot for 20 m, if it took her 5 seconds to reach it, what was her average speed?

• 1,000 m/s

• 2.5 m/s

• 4 m/s

• 20 m/s

Which is a vector?

• Displacement

• Distance

• Speed

The scientific (SI) unit for measuring distance is the ________ .

• mile

• foot

• kilometer

• meter

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

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 displacements.

What describes a vector best?

• Magnitude

• Magnitude and unit

• Magnitude, unit, and direction

• Direction

Suppose the car moved 20 meters to the right, then turned 10 meters back to the left. What are its distance travelled and its displacement?

• The distance will be 30 meters and the displacement will be 0.

• The distance will be 20 meters and the displacement will be 10 m, right.

• The distance will be 30 meters and the displacement will be 10 m, right.

• The distance will be 10 meters and the displacement will be 10 m, right.

Which of the following is the formula used for solving speed?

• v= dt

• v=d/t

• v= t/d

• v= d/t/t

Tags

NGSS.MS-PS3-1

Which refers to the length of the entire path travelled by an object?

• Displacement

• Distance

• Motion

• Time

Which of the following describes displacement?

• It has direction only.

• It has magnitude only.

• It lacks magnitude and direction.

• It has both the magnitude and direction.