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WorksheetsPHYS SCI B Unit 3 Review
Total questions: 13
Worksheet time: 14mins
What is the equation for finding the gravitational force of an object?
F = m x g
F = m ÷ g
F = m + g
F = m - g
An elephant has a mass of 2000 kilograms. What will her gravitational force be on the Moon? The gravitational attraction on the Moon is 2 s2m .
1000 N
1998 N
2000 N
4000 N
Which statement(s) best describes the gravitational force of an object?
The gravitational force of an object increases as its mass increases.
The gravitational force of an object increases as its mass decreases.
The gravitational force of an object decreases as its mass increases.
All of the above
Which statement(s) best describes the gravitational force of an object?
The gravitational force of an object increases as it gets farther away.
The gravitational force of an object increases as it gets closer.
The gravitational force of an object decreases as it gets closer.
The gravitational force of an object does not depend on distance.
On Earth, g = 9.8 s2m
On Mars, g = 3.71 s2m
Will you weigh more on Earth or Mars?
Earth
Mars
I will weight the same on both planets.
On Mars, the gravitational force of a 2 kilogram drone is 7.42 N. What is the drone's force on Earth?
On Earth, g = 9.8 s2m
On Mars, g = 3.71 s2m
2 N
7.42 N
19.6 N
27.5 N
Charli wants to test the effect of gravity on objects with different masses. She drops pennies from each floor in a 4-story building. In each case, she times how long it takes the pennies to reach the ground. What is wrong with her experiment’s design?
She didn't drop all of the pennies at the exact same time.
All of the pennies are the same shape.
She only used pennies and not other coins too.
There is nothing wrong with her experiment's design.
What is air resistance?
The force that acts in the same direction to an object moving through the air
The force that acts in the opposite direction to an object moving through the air
The force that acts on an object at rest on a flat surface
None of the above
Which of the following factors affect air resistance?
The velocity of an object
The area of an object
The shape of an object
All of the above
Kali drops two $100 dollar bills from the top of the Empire State Building. One bill is crumpled, and the other bill is folded into an airplane. Will the two bills land on the sidewalk at the same time?
Yes because they have the same mass.
Yes because they have the same shape.
No because the bills were not dropped from a sufficient height for air resistance to affect them.
No because the bills have different shapes and so air resistance will affect them differently.
Will a person jumping out of a helicopter accelerate limitlessly?
Yes because gravity's force gets weaker as the person nears the ground.
Yes because the person's weight varies as it nears the ground.
No because the air resistance acting on the person will eventually equal the force of gravity.
No because hitting the ground stops the person's acceleration.
What is terminal velocity?
Maximum velocity that is reached by an object as it falls through a fluid
Minimum velocity that is reached by an object as it falls through a fluid
Maximum velocity that is reached by an object as it travels on a solid
Minimum velocity that is reached by an object as it travels on a solid
Which of the following are factors that need to be considered when determining an object’s terminal velocity?
Object's weight
Object's area
Air density
All of the above
