Sketch a position vs time graph for an object that is standing still. Label the axes properly.
Should be a flat line across.
X axis should be labeled "Time (s)"
Y axis should be labeled "Position (m)"
100
What are the units for velocity?
m/s
100
What is the slope of a position vs time graph is equal to?
Velocity
100
A runner is traveling at 3 m/s. He accelerates at 1m/s/s for 6 seconds. How fast is he going now? Include correct units.
9 m/s
200
If I have a velocity of 3 m/s, what does that mean?
Every second, I travel a distance of 3 meters.
200
What would the graph look like if the object moves with a constant velocity towards the detector? Sketch or describe.
It would have a negative, constant slope.
200
What is the equation for average velocity?
v=d/t
200
Convert 6.735 cm to m.
0.06735 m
200
If I am biking at 12 m/s and I decelerate at 3 m/s/s, how fast will I be going after 1 second? Include correct units.
9 m/s
300
What does it mean to accelerate at 2 m/s/s?
Every second, your speed or velocity increases by 2 m/s.
(Must have correct units on velocity!)
300
Draw a position vs time graph for an object that is walking toward the detector and slowing down.
Line should start negative and steep and flatten out as it approaches the y = 0 m line.
300
A skydiver falls for 4 seconds. How far does she travel? Ignore air and include correct units.
80 m
300
Sketch the VELOCITY vs time graph for an object that is slowing down.
See notes
300
If I am traveling at a constant velocity of 6 m/s, how fast will I be going after 4 seconds?
6 m/s
400
When the line on a position vs time graph has a positive slope, is the person walking towards or away from the detector?
Away from the detector.
400
What does the slope of a velocity vs time graph represent, and what are the units?
Slope = acceleration
Units = m/s/s
400
A ball starting from rest speeds up at a rate of 3 m/s/s. It reaches a velocity of 10 m/s. How long did it take to do this?
3.33 s
400
When the slope of the line on a position vs time graph is increasing, what can you say about the object's motion?
Speeding up
Accelerating
Velocity is increasing
(Any of the above is fine)
400
A car is going 30 m/s. How far will the car travel in 2 hours?
216,000 m
500
When the slope on a position vs time graph is decreasing, what can you say about the object's motion?
Slowing down
Negative acceleration
Deceleration
Velocity is decreasing
(any of the above)
500
Sketch the position vs time graph of a person who walks away from the detector at a fast constant speed, stops for a moment, and then walks toward the detector speeding up.
See sub plans.
500
A ball is dropped from a cliff. How fast will it be going after 6.5 s?
65 m/s
500
What is the force that causes object's to accelerate when dropped on Earth?
Gravity
500
A cat is skydiving on the moon, where a = 1.6 m/s/s. The cat falls for 12 seconds. How far does the cat travel?