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- 1. Multiple Choice
Which one falls faster in vacuum? An elephant or a leaf?
Elephant
Leaf
They are the same
Nothing can be said
- 2. 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.
- 3. 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
- 4. 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
- 5. Multiple ChoiceWhat happens to the velocity of a ball as it is dropped off a cliff?It decreases at a uniform rateIt increases at a uniform rateIt is constantIt increases at a non-uniform rate
- 6. Multiple ChoiceIf a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second byabout 5 m/s.about 10 m/s.about 15 m/s.a rate that depends on its initial speed.
- 7. Multiple ChoiceWhat do we call the path of an object when it goes around another object?OrbitFree FallProjectile MotionTerminal Velocity
- 8. Multiple ChoiceWhen only the force of gravity is acting on an object, we say that the object is in ___________________________.Terminal VelocityFree FallProjectile motionCentripetal Force
- 9. Multiple ChoiceWhat force causes objects falling near Earth's surface to slow down?GravityAir ResistanceCentripetal ForceNewtons
- 10. Multiple ChoiceIf a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?Bowling BallFeatherBoth would hit at the same timeNeither one would hit the ground because air is what pushing things down.
- 11. Multiple ChoiceWhat can be described as "falling and missing the ground"?acceleratingfree-fallingorbitingattaining escape velocity
- 12. Multiple ChoiceAt the height of the space station, gravity, compared to that at Earth's surface, is _____about 0.9% as strongabout 9% as strongabout 49% as strongabout 90% as strong
- 13. Multiple ChoiceThe force of gravity is also known asMassWeightDistanceAcceleration
- 14. Multiple Choice
For objects near earth, you can calculate the force of gravity (weight) they experience by...
m x g
m/g
g/m
(m1 x m2)/d
- 15. Multiple Choice
On earth, all objects experience an acceleration due to gravity that is
9.8 m/s/s
24.5 m/s/s
15 m/s/s
different for each object
- 16. Multiple Choice
A drone has a mass of 12.2 kg. It flies at a height of 50 m. What is it's weight (force due to gravity) on earth?
120 N
1.2 N
9.8 N
5978 N
- 17. Multiple Choice
If Mr. Allen visited Mars, he would only weight about 370 N. If his mass is 100 kg, what is the value of gravitational acceleration (g) on Mars?
3.7 m/s/s
37 000 m/s/s
9.8 m/s/s
0.27 m/s/s
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