1.1 Speed and Velocity in One and Two Dimensions

Front

A scalar quantity has:

Back

magnitude but no direction

Front

Which of these is not a scalar quantity? 8 kg, 12 km, 8 m [up], 62 L

Back

8 m [up]

Front

Jelly swims 7.0 m in 14 s. What is Jelly's average speed?

Back

0.50 m/s

Front

A vector quantity has:

Back

magnitude and direction

Front

Which of these is not a vector? 8.4 m/s, 92 m [E], 582 km/h [up], 38 cm [left]

Back

8.4 m/s

Front

Position and displacement are different because:

Back

position is where you are and displacement is the change in position

Front

Which of the following would have zero velocity but a non-zero speed?

• A racecar driving in a straight line
• A swimmer who swims diagonally to the opposite side of the pool
• A runner who runs to the opposite wall then runs back to her starting position
• A mailman who visits 37 different houses

Back

A runner who runs to the opposite wall then runs back to her starting position

Front

This object's velocity is:

Back

constant and heading east

Front

At which time is the object traveling the quickest? Options: 6 s, 5 s, 2 s, 0 s

Back

6 s

Front

Is there a time when the object's velocity is 0 m/s?

Back

No