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Motion Test Review
SHOW WORK ON A SEPARATE PIECE OF PAPER TO RECEIVE FULL CREDIT! ROUND TO NEAREST TENTH.
1. A car traveled 45 km in 2 hours, 64 km in the next 1 hour, and then 84 km in 2 hours before reaching its
destination. What was the car’s average speed?
2. What is the speed of a bobsled whose distance-time graph indicates that it traveled 50 m in 25 seconds?
3. Which example identifies a change in motion that produces acceleration?
a.
a speed skater moving at a constant speed on a straight track
b.
a car speeding up as it went through a green light
c.
a particle moving in a vacuum at constant velocity
d.
a vehicle moving down the street at a steady speed
4. Suppose you increase your speed on your bike from 5 m/s to 7 m/s in a period of 2 second. What is your
acceleration?
5. An object moving at 45 m/s takes 5 seconds to come to a stop. What is the object’s acceleration?
6. During a race, a runner runs at a speed of 4 m/s. 2 seconds later, she is running at a speed of 6 m/s. What is the
runner’s acceleration?
7. If you ride your bike at an average speed of 7 km/h and need to travel a total distance of 56 km, how long will it
take you to reach your destination?
8. A car traveling at 80 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds. What is its
deceleration?
9. A car’s average speed is 100 km/hr. If a trip takes 6 hours, how far did the car travel?
10. You traveled 63 kilometers in 0.7 hours, followed by 84 kilometers in 0.9 hours.
A) What was the speed of the first part of the trip?
B) Second part of the trip?
11. An Olympic swimmer swims 60 meters in 34 seconds. What is her average speed?
12. Which has more momentum, a 5 kg rabbit running at 6 m/sec or a 10 kg tortoise running at 1 m/s? (calculate
the momentum for both)
13. What is the potential energy of a 150 kg rock resting at the top of a 300 meter cliff?
14. What is the kinetic energy of a 70 kg jogger running at 4 meters/second?
15. Use the graph for the following questions:
A) What is the average velocity for the last six hours? (hour 7 to hour 12)
B) What is the lowest velocity shown during the first five hours?
C) What is the average velocity for the whole twelve hours?
16.
17. What is the net force experienced by this box?
18. On the graph above write down the type of motion that is occurring for each section of the graph (ie. constant
velocity, positive acceleration, negative acceleration, no motion, etc.)
19. Use the picture above to answer the 4 questions below.
a.
Where is the potential energy the greatest?
b.
Where is the potential energy the lowest?
c.
Where is the kinetic energy the greatest?
d.
Where is the kinetic energy the lowest?
20. For each set of carts draw and arrow or write stop to indicate the direction the carts will be moving after their
collision. Assume the objects stick together after colliding.
21. For the following diagram, a 25kg ball is being dropped from the height of 15 meters. At the height of 15 meters,
the ball is at rest waiting to fall. Calculate the potential and kinetic energies at each height indicated in the
diagram.