Constant Velocity Motion

How fast is this object moving?

• 1 meter

• 1 meter /second

• 2 meters/second

• 4 seconds

Which is true about plot c?

• position is negative

• velocity is positive

• position is changing

At what time does this object have a negative velocity?

• 3 seconds

• 7 seconds

• 11 seconds

• never

_____ are measured in units of m/s in Physics.

• Speed and velocity
• Distance and displacement
• Scalars
• Vectors

Consider the position vs. time graph below for cyclists A and B.

Do the cyclists start at the same point?

• Yes

• No

At t= 7s, which cyclist is ahead?

• A

• B

Which cyclist is travelling faster at t = 3s? (You need to know that both cyclists are traveling at constant speed, meaning that both x(t) lines are straight)

• A

• B

Are their velocities equal at any time?

• Yes

• No

What is happening at the intersection of lines A and B?

• The cyclists stop

• The cyclists speeds are equal

• The cyclists are at the same position at the same time.

What is speed?

• how far you go

• how much distance is covered over a period of time

• how fast you accelerate

• the change in the location of a object

Tags

NGSS.MS-PS3-1