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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 textbook is dropped from a second floor window and falls to the ground. What happens to the acceleration as the book falls to the ground
the acceleration increases
the acceleration decreases
the acceleration remains constant
- 3. 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
- 4. Multiple Choice
A baseball is thrown up into the air. What happens to the acceleration as the ball rises in the air?
the acceleration increases
the acceleration decreases
the acceleration remains constant
- 5. Multiple ChoiceWhich would fall with greater acceleration in a vacuum—a leaf or a stone?the leafthe stoneThey would accelerate at the same rate.It is difficult to determine without more information.
- 6. 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.
- 7. Multiple ChoiceWhere would you have more mass, on Earth or on the Moon?EarthMoonIS THE SAME, mass DOESN'T CHANGEIn both Planets.
- 8. Multiple ChoiceWhen an object falls in physics world, what happens?It accelerates at a constant rate until it hits the groundIt accelerates at a non-constant rate until it hits the groundIt accelerates at a constant rate until it reaches terminal velocityIt accelerates at a non-constant rate until it reaches terminal velocity
- 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
In Newtonian physics, ________________ is any motion of a body where gravity is the only force acting upon it.
kinematics
free fall
mechanics
velocity
- 11. Multiple Choice
The standard acceleration due to gravity (or standard acceleration of free fall),is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is defined by standard as:
9.8 m/s.
9.8 m.
9.8 m/s2.
9.8 s.
- 12. Multiple Choice
If an object is free falling onto the Moon, which of the following would be correct?
It would accelerate at 9.8 m/s2
It would not encounter any air resistance.
It would not fall because the Moon has no gravity.
It would impact the surface and bounce back into space.
- 13. Multiple Choice
Heavier objects free fall faster than lighter objects.
True
False
- 14. Multiple ChoiceDo free falling objects move at constant velocity or do they accelerate?Falling objects accelerate at -9.8 m/s2Falling object move at constant velocityFalling objects accelerate at 100 m/s2It depends on the mass: heavy objects accelerate, light objects do not
- 15. Multiple Choice
Which of the dot diagrams best describe the motion of a free-falling object that is dropped from rest?
Diagram A
Diagram B
Diagram C
- 16. Multiple Choice
As a rock in FREE FALL falls through the air, acceleration
stays constant
decreases until it hits terminal velocity
increases until it hits terminal velocity
increases ~10 m/s each second
- 17. 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
- 18. Multiple Choice
Free fall is
moving through the air under the influence of the force of gravity only.
not paying for a fall.
clothing sale with lots of orange & brown clothes.
a feather dropped from an airplane.
- 19. Multiple ChoiceWhat is terminal velocity?The speed an object dies atThe highest speed an object reaches because air resistance offsets gravity in the real worldWhen an object reaches its final velocity of zeroOnly happens in physics world
- 20. Multiple Choice
1. In analyzing freely falling bodies, we neglect the effect of ___ to the object.
A. gravity
B. air resistance
C. gravity and air resistance
D. all forces except air resistance
- 21. Multiple Choice
A ball is thrown 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
- 22. Multiple Choice
Describe the motion as a ball is moving at point B
acceleration due to gravity does not exist
velocity of the ball is 0 m/s
velocity is slowing down
acceleration due to gravity is upwards
- 23. Multiple Choice
Describe the motion as a ball is moving upwards from A to B
acceleration is remaining constant
acceleration is slowing down
acceleration is speeding up
- 24. Multiple Choice
Describe the motion as a ball is moving downward from B to C
acceleration is remaining constant
acceleration is slowing down
acceleration is speeding up
- 25. Multiple Choice
Describe the motion as a ball is moving downwards from B to C
velocity is remaining constant
velocity is slowing down
velocity is speeding up
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