Understanding Speed, Velocity, Acceleration

What is the primary difference between speed and velocity?

• Velocity is always faster than speed.

• Speed can be calculated without time, velocity cannot.

• Velocity includes direction, whereas speed does not.

• Speed is a vector, while velocity is a scalar.

In physics, what type of quantity is speed considered?

• Function

• Vector

• Scalar

• Algorithm

Tags

NGSS.MS-PS3-1

What does velocity require that speed does not?

• Distance

• Time

• Direction

• Energy

What is speed defined as in physics?

• Distance multiplied by time

• Velocity minus direction

• Distance divided by time

• Time divided by distance

Tags

NGSS.MS-PS3-1

If someone cycles north at 30 kilometers per hour, what is this an example of?

• Displacement

• Velocity

• Speed

• Acceleration

Tags

NGSS.MS-PS3-1

If you cycle around a park and return to your starting point, what is your velocity?

• Zero

• Undefined

• Constant

• Equal to your speed

If you travel 5 kilometers north and then 5 kilometers south, what is your displacement?

• 5 kilometers

• 0 kilometers

• 1 kilometer

• 10 kilometers

What would be a reason to ask further questions about distance and displacement?

• To differentiate between scalar and vector quantities

• To calculate speed accurately

• All of the above

• To understand velocity better

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Q: Juan ran 72 m across the football field in 8 seconds. What was his speed?

• 8 m/s

• 7 m

• 576 m/s

• 9 m/s

Q: Steve runs 20 m North in 4 seconds. What is his velocity

• 5 m/s

• 5 m/s South

• 4 m/s South

• 5 m/s North