Displacement & Velocity

What is the definition of displacement?

• is defined as the change in position of an object!!

• is defined as a vector measurement of the direction and rate of the motion.

Suppose a runner has a velocity of -3 m/s, this means?

• the runner is slowing down

• the runner is about to stop

• the runner is running in the negative direction!!

Is it possible for an object to have a positive position and a negative velocity?

• NO

• YES!!

Δx means....

• Distance

• Position

• Displacement>>>

All of the following are true for an object that is not moving except

• velocity graph will have a zero slope line

• velocity graph will have a zero slope line on the time axis

• position graph will have a zero slope line

• velocity graph will have a zero slope line in the positive area!!!

If my velocity is negative and constant, the position versus time graph should be...

• linear with a positive slope

• constantly decreasing with a curve to show it is slowing

• linear with a zero slope

• linear with a negative slope>>

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home. What is Bill's distance?

• 0 meters

• 1600 meters

• 400 meters

• 800 meters<3

Which of the following is NOT a scalar quantity?

• displacement>>>

• time

• distance

• speed

Vector quantities need both a magnitude and a _____.

• direction:)

• distance

• displacement

A distance vs. time graph shows an object's.....

• frame of reference

• speed<333

• favorite food

• acceleration