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Motion
Speed and Velocity
Acceleration
Graphing Motion
100
A person, place, or thing used to determine if an object is in motion is called a __________ point.
What is Reference
100
Which of the following is an example of an object traveling at a constant speed? A car going from rest to 60 mph. A speedboat slowing down from 30 to 15 mph. A person jogging at 6 mph for an hour straight.
What is A person jogging at 6 mph for an hour straight.
100
What are the 3 ways that an object can accelerate (either positively or negatively)?
What is Speed up, slow down, change direction
100
What happened between 0 and 1 second? What happened between 1 and 3 seconds?
What is No movement from 0 to 1s, then moved at a constant speed from 1-3s
200
Suppose you are bungee jumping off a bridge. Describe your motion relative to the ground and the bungee cord.
What is Ground- you are moving towards it (and then away from it) Bungee Cord- You’re not moving (distance isn’t changing).
200
Draw a speed-time graph showing an object speeding up.
What is Speed on the y-axis with time on the x-axis and a straight line going up and to the right.
200
If you measure an object’s velocity in meters per second, then what are the units for acceleration?
What is meters per second per second (m/s/s or m/s2)
200
What is the average speed of the object from 1 to 3 seconds?
What is 2 m/2 s = 1 m/s
300
Sketch a distance-time graph for an object that is NOT in motion, but is a certain distance from a reference point
What is A horizontal line above 0 on a distance-time graph.
300
On a distance-time graph, how do you tell the object that’s moving at a greater speed?
What is The object that corresponds to the steeper slope is moving faster.
300
Suppose you are jogging at 7 mph and after 20 minutes, you are jogging at 5 mph for the rest of the run. This is an example of a _____________.
What is Deceleration, because you slowed down
300
Describe the motion of the object from the velocity-time graph to the right. What is the average acceleration of the object for the entire 6 seconds?
What is The object is speeding up or accelerating at 2 m/s/s.
400
Why do cops use their radar gun only when they are stationary?
What is If they didn’t stay still, your speed would seem slower than what it actually is.
400
What does a flat horizontal line on a SPEED-TIME graph indicate? So, is the object accelerating or decelerating? How do you know?
What is The object is moving at a constant speed, so its speed is not changing. Therefore, it has no acceleration or deceleration.
400
How do you determine the acceleration of an object by using a SPEED-TIME graph?
What is Determine the slope of the line = rise/run = speed/time
400
How far did the object travel in the last 4 seconds?
What is 4 m/s (the velocity for the last 4 sec.) x 4 s (the time) = 16 m