Newton's Third Law
A push or pull on an object is called a _____.
force
What axis is the distance labeled on a distance and time graph?
y- axis
The diagram shows a distance-time graph of a car trip.
Which data matches a point on this graph?
At 1.0 hour, the car has traveled 40 kilometers.
At 1.0 hour, the car has traveled 50 kilometers.
At 1.0 hour, the car has traveled 180 kilometers.
At 1.0 hour, the car has traveled 320 kilometers.
2
The difference between speed and velocity is that velocity includes (displacement / direction / distance ).
direction
Chloe drives from Manhattan to New Jersey to visit a friend. She travels along the Hudson River for 8.2 km, crosses the George Washington Bridge for 1.8 km, and drives another 4.5 km to her destination. Her trip is shown in the image.
The black path on the map indicates the traveled. The white arrow on the map represents Chloe’s .
Interpreting the map provided, which terms, in order of appearance, best complete the sentences?
speed; velocity
speed; distance
distance; displacement
distance; velocity
[Answer: distance; displacement]
If an object is not moving, the forces on it are ________ .
If an object has constant motion, the forces on it are _____
If an object changes its speed, the forces on it are ______
If an object changes its direction, the forces on it are __________ .
Which terms, in order of appearance, best complete the sentences?
not zero; unbalanced; balanced; unbalanced
balanced; balanced; unbalanced, unbalanced
not zero; unbalanced; not zero; balanced
unbalanced; unbalanced; balanced; balanced
[Answer: balanced; balanced; unbalanced, unbalanced]
What axis is time listed on distance time graph ?
x-axis
With help of his brother, Braden collects the data displayed in the graph as he is riding his new bicycle.
Using this data, calculate Braden’s average speed on his bicycle.
1 m/s
4 m/s
5 m/s
25 m/s
5 m/s
When an object in motion has a velocity that does not change, its movement is called (uniform/ linear / level) motion.
uniform
A runner jogs 50 meters east, then turns around and runs 30 meters west.
a) What is the total distance traveled? (total)
b) What is the displacement? (total distance east)
80 m
20 m east
If the forces on a shopping cart are balanced, what kind of motion might the cart have? Select two answers.
Moving backward at increasing speed
Moving forward at constant speed
Moving forward while slowing down
Remaining in the same spot and not moving
3 & 5
On a distance-time graph, what does a positive slope indicate?
The object has a negative velocity.
The object is moving fast.
The object is moving back to the starting point.
The object is moving away from the starting point.
The object is moving away from the starting point.
A turtle relay was set up for the turtles to race at a straight distance of 25 meters. The turtle that reached 25 meters first was the winner. The fastest turtle at this event completed the race in 16.8 seconds.
What was the approximate speed of the turtle that traveled the fastest?
0.056 meters per second
0.45 meters per second
1.42 meters per second
1.49 meters per second
[Answer: 1.49 meters per second]
Erik records the motion of a car moving along Route 66.
Which statement correctly explains the motion of the car based on the graph?
The car moves at a constant velocity for 5 seconds then turns right and moves at a constant velocity for 5 seconds.
The car moves at a constant velocity for 5 seconds then stops for 5 seconds.
The car moves at a constant speed of 25 m/s and then stops.
The car moves at a constant speed of 5 m/s then decreases to a speed of 2.5 m/s.
The car moves at a constant velocity for 5 seconds then stops for 5 seconds.
Dan’s printed map shows the distance between Houston and Miami is 964 miles. The navigation system in Dan’s car says it is 1,187.5 miles from Houston to Miami. Why are the distances different?
The navigation system is using metric units.
Maps are inaccurate compared to navigation systems.
The map shows the distance, but the navigation system shows the displacement.
A car cannot travel in a straight line from Houston to Miami. The navigation system is showing the distance on the road, not the displacement.
[An/ A car cannot travel in a straight line from Houston to Miami. The navigation system is showing the distance on the road, not the displacement.]
A student holds a heavy medicine ball and tries to lift it. The ball is so heavy that it makes the student’s hands drop down instead of lifting the ball.
Which of the following best describes the forces acting on the ball?
The force applied by the student is stronger than the force of gravity on the ball.
The forces are balanced, so the ball stays still in the student’s hands.
The force of gravity on the ball is stronger than the force applied by the student.
There are no forces acting on the ball.
3
A distance-time graph shows how the distance an object travels changes over time.
Speed is equal to the value of the ______ of the line on a distance-time graph.
If the slope is flat, the object’s speed is _____ .
If the slope is shallow, the object’s speed is _____ .
If the slope is steep, the object’s speed is _____.
Which terms, in order of appearance, best complete the sentences about distance-time graphs?
slope; slower; zero; faster
slope; zero; slower; faster
x-axis; faster; zero; slower
y-axis; zero; faster; slower
2
The data table provides distances traveled in six one-second intervals. Use the data to calculate the average speed over six seconds.
Time Interval Distance Traveled
0–1 s 3.0 m
1–2 s 4.0 m
2–3 s 4.5 m
3–4 s 6.5 m
4–5 s 7.0 m
HINT - TOTAL DISTANCE / TOTAL TIME
5 m/s
You walk from the shop to school along the street, following the path indicated by the thick black arrows.
The trip takes 120 seconds. Summarize how you would calculate your speed and determine your velocity, explaining the difference between the two values.
HINT -
S= D/T
Displacement is (Distance + Direction)
Velocity is displacement / time
230m /120 s = 1.92 m/s (Speed)
130 m West / 120 s = 1.08 m/s West (Velocity)
A dog runs 5 meters north, then 5 meters south back to its starting point.
What is the dog's displacement?
0 m
The weight of a pallet of goods sitting in a warehouse is balanced by the supporting force of the floor. In order to lift the pallet, a forklift operator must apply a force that more than balances the weight of the pallet. The table shows forces acting in different situations. Complete the table with appropriate data.
1,000 N upward
yes
no
0
no
The data table provides distances traveled by an object over time. Sketch a distance-time graph beneath the table.
Time (s) Distance (m)
1 1
2 2
3 4
4 6
5 9
6 9
+ slope and end straight @ 5,6
A student measures how far a classmate walks from a starting point every minute for 4 minutes. They write their data in a table, but their data is incomplete.
MOTION DATA
Time (min) Distance (m)
1 0
2 Missing data
3 150
4 225
4 300
If the person walked at a constant speed, what is the estimated value of the missing data?
25 m
50 m
75 m
100 m
75 m
(WORTH x2)
A car travels east for 4 seconds at a speed of 6 m/s, then immediately turns around and travels west for 2 seconds at a speed of 4 m/s.
What is the car’s average velocity for the entire trip?
Average velocity= Total displacement/ Total Displacement
Average velocity= 16 m/ 6s =2.67 m/s east
A student walks 40 meters north, then 30 meters east, then 40 meters south, and finally 30 meters west back to where they started.
a) What is the total distance traveled?
b) What is the displacement?
140 M
0 M