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- 1. Multiple Choice
A textbook is dropped from a second floor window and falls to the ground. What happens to the velocity as the book falls to the ground?
the velocity increases
the velocity decreases
the velocity remain constant
- 2. Multiple Choice
A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?
the velocity increases
the velocity decreases
the velocity remains constant
- 3. Multiple ChoiceA ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would beless than the speed it had when thrown upwards.more than the speed it had when thrown upwards.the same as the speed it had when thrown upwards.
- 4. Multiple Choice
Free fall is any motion of a body where ____ is the only force acting upon it.
body attraction
tension
gravity
velocity
- 5. Multiple Choice
Two rocks with different size and mass are dropped from the same height. Which of the rock will reach the ground first?
greater rock
smaller rock
both reach the ground at the same time
- 6. Multiple Choice
Which of the following graphs best represents free fall motion?
- 7. Multiple Choice
A ball is thrown vertically upward from the surface of the earth. Consider the following quantities:
(I) the displacement of the ball
(II) the velocity of the ball
(III) the acceleration of the ball
Which of these is (are) zero when the ball has reached the maximum height?
II only
I and III only
I and II only
I only
- 8. Multiple ChoiceIf you throw a baseball straight up, what is its velocity at the highest point?9.8 m/s29.8 m/s0 m/s20 m/s
- 9. 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
- 10. Multiple Choice
A rock from a volcanic eruption is launched straight up into the air with no appreciable air resistance. Which one of the following statements about this rock while it is in the air is correct?
On the way up, its velocity is upward, and at the highest point its velocity is zero.
On the way down, its velocity is downward, and at the highest point its acceleration is zero.
Throughout the motion, the velocity is always in the same direction as the acceleration.
The acceleration is downward at all point in the motion except that is zero at the highest point.
- 11. Multiple ChoiceWhich of the following statements applies to the motion of a ball rising and then falling in free fall?
I. The ball has constant acceleration as it moves upward.
II. The ball has constant acceleration at the top of its path.
III. The ball has constant acceleration as it moves downward.I onlyIII onlyI and IIII, II, and III - 12. Multiple Choice
Juan is standing on the top observation deck of the Eiffel Tower in Paris at a height of 300 meters. He drops his cell phone. How fast will the phone be traveling when it hits the ground? Ignore the effect of air resistance.
9.8 m/s
76.68 m/s
149.76 m/s
46.99 m/s
- 13. Multiple Choice
If an object is in free fall for three seconds, how fast will it be falling at the end of its motion?
9.8 m/s
19.6 m/s
29.4 m/s
39.2 m/s
- 14. Multiple ChoiceA pumpkin is dropped from a 35 m building. What is its initial velocity (vi)?9.8 m/s235 m0 m/s9.8 m/s
- 15. Multiple ChoiceWhat does this graph represent?Constant SpeedAccelerationNot moving
- 16. Multiple ChoiceHow long did it take this object to travel back to its reference/starting point?20 s30 s60 s100 s
- 17. Multiple ChoiceDave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?400 minutes100 minutes100 seconds.25 seconds
- 18. Multiple Choice
A unicyclist pedals 40 hours at 5 miles per hour without making any stops. How far does she get?
200 miles
8 miles
35 miles
45 miles
- 19. Multiple ChoiceA ball of clay is thrown at a wall at a velocity of 28.0 m/s. After it hits the wall, it takes 0.020 s to stop. What is the acceleration of the clay when it hits the wall?1400 m/s2-1400 m/s20.56 m/s2-0.56 m/s2
- 20. Multiple ChoiceWhen are you undergoing an acceleration in a car?speed upslow downmake turnsAll of the above
- 21. Multiple ChoiceA golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?750 seconds35 seconds0.3 seconds3.3 seconds
- 22. Multiple ChoiceA box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest. Find the acceleration.30 m/s24 m/s29 m/s281 km/hr
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