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- 1. Multiple ChoiceThe rate at which velocity changes is called acceleration.TrueFalse
- 2. Multiple Choice
A train travels 6 meters in the first second of travel, 6 meters again during the second second of travel, 6 meters again during the third second. It's acceleration is __ m/s2?
0
6
12
18
- 3. Multiple ChoiceIn the absence of air resistance, objects fall at constantspeedvelocityaccelerationall of the above
- 4. Multiple ChoiceAn object accelerates at 2 m/s^2. Assuming the object starts from rest, how much time does it need to accelerate to a speed of 16 m/s?4 s8 s16 s1/16 s
- 5. Multiple ChoiceA car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops?4.20 m52.5 m105 m158 m
- 6. Multiple ChoiceIn each of the following cases, determine which car has the greatest acceleration.starts from 0 m/s to 20 m/s in 4 seconds.speed up from 20m/s to 40m/s in 3 secondsslow down from 50m/s to stop in 2 secondsstarts from 0 m/s to 20m/s in 5 seconds
- 7. Multiple Choice
A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?24 m/s218 m/s216 m/s216 m/s - 8. Multiple ChoiceA dog runs with an initial speed of 7.5 m/s to a stop in 15 seconds. What is the dog's acceleration?-7.5 m/s-7.5 m/s2-0.5 m/s27.5 mi//hr
- 9. Multiple ChoiceAn object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?6.30 m17.5 m27.2 m40.0 m
- 10. Multiple ChoiceHow much time would it take for an object to fall 4.7 meters?0.959 s4.79 s0.979 s
- 11. Multiple ChoiceAn airplane lands on a runway with a velocity of 150 m/s. How far will it travel until it stops if its rate of deceleration is constant at -3 m/s2?525 m3750 m6235 m9813 m
- 12. Multiple ChoiceA ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be:19.6 m/s-5.4 m/s-44.6 m/s44.6 m/s
- 13. Multiple Choice
Kinematic equations can only be used for problems with constant ....
Position
Velocity
Acceleration
Time
Variables
- 14. Multiple Choice
Describe the motion by imagining the slope of the tangent and its change overtime.
Negative Velocity, Negative Acceleration
Positive Velocity, Negative Acceleration
Positive Velocity, Positive Acceleration
Negative Velocity, Positive Acceleration
- 15. Multiple ChoiceIn a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?They don't; they hit the ground at the same time.One is more dense than the other.One is heavier than the other.Air resistance
- 16. Multiple Choice
You toss a ball straight upward, in the positive direction. The ball falls freely under the influence of gravity.
At the highest point in the ball’s motion,
its velocity is zero and its acceleration is zero.
its velocity is zero and its acceleration is positive (upward).
its velocity is zero and its acceleration is negative (downward).
its velocity is positive (upward) and its acceleration is zero.
its velocity is positive (upward) and its acceleration is zero.
- 17. Multiple Choice
What happens to the velocity of a ball as it is dropped off a cliff?
It decreases at a uniform rate
It increases at a uniform rate
It is constant
It increases at a non-uniform rate
- 18. Multiple Choice
What is the acceleration of a ball that is dropped off the side of a cliff after 1,2,3,4,5 seconds? (use 10 m/s2 for 'g')
5,10,15, 20, 25 m/s2
10, 20, 30, 40, 50 m/s2
5, 20, 45, 80, 125 m/s2
10,10,10,10,10 m/s2
- 19. Multiple Choice
What is the speed of a ball that is dropped off the side of a cliff after 1,2,3,4,5 seconds? (use 10 m/s2 for 'g')
5,10,15, 20, 25 m/s
10, 20, 30, 40, 50 m/s
5, 20, 45, 80, 125 m/s
10,10,10,10,10 m/s
- 20. Multiple Choice
What is the distance a ball falls after 1,2,3,4,5 seconds? (use 10 m/s2 for 'g')
10, 20, 30, 40, 50 m
5, 20, 45, 80,125 m
5, 10,15, 20, 25 m
10, 25, 60, 90,120 m
- 21. Multiple Choice
Juan is standing on the balcony of his hotel room, at a height of 45 meters. He accidentally drops his cell phone over the railing. How fast will the phone be traveling when it hits the ground? Ignore the effect of air resistance. (hint: how long does it take to hit the ground?)
9.8 m/s (10 m/s if you round 'g' to 10 m/s2)
24.9 m/s (30 m/s if you round 'g' to 10 m/s2)
149.76 m/s (150 m/s if you round 'g' to 10 m/s2)
46.99 m/s (50 m/s if you round 'g' to 10 m/s2)
- 22. Multiple Choice
A ball is thrown in the air with an initial velocity of 40 m/s. If Gravity is estimated to be -10 m/s2, How long does it take to return back down to the point from which it was thrown?
4 seconds
2 seconds
6 seconds
8 seconds
- 23. Multiple Choice
A ball is thrown upward in the air with an initial velocity of 40 m/s. How fast is it going when it returns back down to the point from which it was thrown?
10 m/s
20 m/s
30 m/s
40 m/s
- Answer choicesTagsAnswer choicesTags