Relative Motion Speed Velocity Distance and Displacement

Which is true?

• Speed is measured in m/s but velocity is measured in s/m

• Speed is a vector and velocity is a scalar

• Speed and velocity are the same exact thing

• Speed is like velocity but without a direction

What is a difference between distance and displacement

• Distance is measured in seconds and displacement is measured in meters

• Distance is always shorter than displacement

• Displacement can be equal to zero if the object ends in the place it began in

• Distance can be equal to infinite when only a small distance has been travelled

An astronaut travels at a speed of 400 m/s for 250 seconds, what is the total distance he traveled?

• 0.625 m

• 100,000 m

• 1.6 m

• 650 m

A horse follows a dangling carrot for 20 m, if it took her 50 seconds to reach it, what was her average velocity?

• 1,000 m/s

• 2.5 m/s

• 0.4 m/s

• 20 m/s

How many seconds does it take to travel 800 cm at a speed of 25 cm/s?

• 32 s

• 20,000 s

• 0.03 s

• 25 s

A frog hops along 50 cm for 5 seconds, sees a fly and turns hopping viciously at it at a rate of 60 cm every 2 seconds. What is his average speed?

• 5.0 cm/s

• 30.0 cm/s

• 15.7 cm/s

• 770 cm/s

If it takes 45 s to travel 50 m, what was your average speed over the course of the trip?

• 2,250 m/s

• 0.9 m/s

• 1.1 m/s

• 95 m/s

Which is true about this graph?

• The displacement of the object is 200 m

• The distance traveled by the object is 200 m

• The distance traveled by the object is 0m

• The displacement of the object is 0 m

Which of the following has INCORRECT units?

• speed = m/s

• time = s

• displacement = m

• velocity = s

Which is a vector?

• Displacement

• Distance

• Speed

• A wrong answer