23 Unit 7 Review CircGrav K

What two things does Gravitational force depend on?

• mass

• distance

• time

What is gravitational force?

• the force of attraction between all masses in the universe
• attraction or repulsion that arises between electrically charged particles because of their motion
• The repulsive or attractive interaction between any two charged bodies
• a force between two objects that can only exist if these objects make direct contact with each other

What are field forces?

• a force that is applied by objects in contact with each other
• a force field is a vector field corresponding with a non-contact force

Which is the graph of the relationship between Gravitational Force vs Distance between two objects

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what direction is correct for gravitational force vectors between the two objects below

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how does the gravitational force between one object compare to the gravitational force of another object (Newton's 3rd Law)

• the force is always larger for the bigger object and smaller for the smaller object
• the forces are equal in number and direction
• the forces are equal in number but opposite in direction
• the force of the larger object is smaller and the force of the smaller object is larger.

If you drop a rock from a tall building, what happens to the gravitational force between the rock and the Earth as the rock gets closer to the earth (Distance between decreases).

• Gravitational force will increase exponentially
• Gravitational force will decrease exponentially
• Gravitational force will remain unchanged

If the gravitational force between two objects is 20N and you double the distance between them by what factor is the force changed? __________ What will the new force be? __________

• 2xForce, 40N
• 4xForce, 80N
• 1/2xForce, 10N
• 1/4xForce, 5N

If the gravitational force between two objects is 20N and you cut the distance between them by half (1/2) by what factor is the force changed? __________ What will the new force be? __________

• 4xForce, 80N
• 2xForce, 40N
• 1/2xForce, 10N
• 1/4xForce, 5N

If the gravitational force between two objects is 20N and you double mass 1, by what factor is the force changed? __________ What will the new force be? __________

• 2xForce, 40N
• 1/2xForce, 10N
• 4xForce, 80N
• 1/4xForce, 5N