CPPS EXAM REVIEW 3
1. Balanced forces acting on an object....
Answer: never change the object's motion
2. What is the deceleration of a 5400g toy truck with a force of 32N?
Answer: -5.9 m/s2
3. A 20N force & a 15N force act on an object in opposite directions. What isthe
net force on the object?
Answer: 5N
4. What is the net force of a 200-kg crate sitting at rest on a factory floor?
Answer: Zero
5. A long distance runner completes a 50km race with an average speed 72km.hr.
How long did it take the runner to complete the race?
Answer: 6.9 hr
6. She drove for 2 hours and made it 214km. Mrs. Marmo drove 2.5 hours andmade
it 262km. Mrs. Widener drove 3 hours and made it 222km.
Answer: 93.1 km/hr
7. If an object accelerates 18m/s? when a force of 62N is exertad, what is the
objects mass?
Answer: 3.9 kg
8. When you know both the speed and direction of an object's motion, youknow
the
Answer: velocity of the object.
9. You can show the speed of an object on a line graph in which you plot timeagainst
Answer: distance
10. When an objecf's distance from another object is changing.
Answer: it is in motion.
, 11. Averago speed is
Answer: the total distance traveled divided by the total time.
12. On a graph showing distance versus time, a horizontal line represents anobject
that is
Answer: not moving at all.
13. If you know the distance an object has traveled in a certain amount of timeyou
can determine...
Answer: the speed of the object.
14. If an object moves in the same direction & at a constant speed for 4 hrs,did the
velocity change?
Answer: The object's velocity did not change.
15. A place or object used for comparison to determine if something is inmotion is
called
Answer: a reference point
16. The steepness of a line on a graph is called
Answer: slope
17. rate at which velocity changes is called
Answer: acceleration
18. A car approaching a red light is an example of what?
Answer: Deceleration
19. To determine the acceleration rate of an object, you must calculate thechange in
speed during each unit of
Answer: Time
20. A carpenter hammering a nail is an example of what?
Answer: exerting a force
21. What happens when two forces act in the same direction?
Answer: They add together.
22. The tendency of an object to resist change in its motion is known as
Answer: Inertia
1. Balanced forces acting on an object....
Answer: never change the object's motion
2. What is the deceleration of a 5400g toy truck with a force of 32N?
Answer: -5.9 m/s2
3. A 20N force & a 15N force act on an object in opposite directions. What isthe
net force on the object?
Answer: 5N
4. What is the net force of a 200-kg crate sitting at rest on a factory floor?
Answer: Zero
5. A long distance runner completes a 50km race with an average speed 72km.hr.
How long did it take the runner to complete the race?
Answer: 6.9 hr
6. She drove for 2 hours and made it 214km. Mrs. Marmo drove 2.5 hours andmade
it 262km. Mrs. Widener drove 3 hours and made it 222km.
Answer: 93.1 km/hr
7. If an object accelerates 18m/s? when a force of 62N is exertad, what is the
objects mass?
Answer: 3.9 kg
8. When you know both the speed and direction of an object's motion, youknow
the
Answer: velocity of the object.
9. You can show the speed of an object on a line graph in which you plot timeagainst
Answer: distance
10. When an objecf's distance from another object is changing.
Answer: it is in motion.
, 11. Averago speed is
Answer: the total distance traveled divided by the total time.
12. On a graph showing distance versus time, a horizontal line represents anobject
that is
Answer: not moving at all.
13. If you know the distance an object has traveled in a certain amount of timeyou
can determine...
Answer: the speed of the object.
14. If an object moves in the same direction & at a constant speed for 4 hrs,did the
velocity change?
Answer: The object's velocity did not change.
15. A place or object used for comparison to determine if something is inmotion is
called
Answer: a reference point
16. The steepness of a line on a graph is called
Answer: slope
17. rate at which velocity changes is called
Answer: acceleration
18. A car approaching a red light is an example of what?
Answer: Deceleration
19. To determine the acceleration rate of an object, you must calculate thechange in
speed during each unit of
Answer: Time
20. A carpenter hammering a nail is an example of what?
Answer: exerting a force
21. What happens when two forces act in the same direction?
Answer: They add together.
22. The tendency of an object to resist change in its motion is known as
Answer: Inertia
