Circular motion and gravitational forces in physics Quiz

Test your knowledge of kinematics with questions on centripetal force, gravitational attraction, laws of motion, and more!

#1

Which force keeps an object moving along a circular path?

Frictional force
Centripetal force
Gravitational force
Normal force
#2

What is the direction of the centripetal force acting on an object moving in a circle?

Toward the center of the circle
Tangent to the circle
Away from the center of the circle
Perpendicular to the circle
#3

What is the direction of the gravitational force between two objects?

Always repulsive
Depends on the masses of the objects
Always attractive
Depends on the distance between the objects
#4

Which scientist is credited with the formulation of the laws of planetary motion?

Isaac Newton
Johannes Kepler
Galileo Galilei
Albert Einstein
#5

What type of motion does a satellite in a circular orbit around the Earth experience?

Linear motion
Uniform circular motion
Harmonic motion
Random motion
#6

What is the formula for centripetal force?

F = mv^2/r
F = mgh
F = mg
F = ma
#7

What happens to the centripetal force required to keep an object moving in a circle if the radius of the circle is doubled?

It is halved
It is doubled
It remains the same
It is quadrupled
#8

What is the centripetal acceleration of an object moving in a circle with a constant speed?

Zero
Non-zero and constant
Non-zero and varying
Depends on the mass of the object
#9

Which of the following factors affects the magnitude of gravitational force between two objects?

The mass of one object only
The mass of both objects and the distance between them
The mass of both objects only
The distance between the objects only
#10

Which of the following is NOT a requirement for an object to move in uniform circular motion?

A net force acting toward the center of the circle
A constant speed
A circular path
A frictionless surface
#11

If the mass of one object is doubled while the mass of the other remains the same, how does the gravitational force between them change?

It is halved
It is doubled
It remains the same
It quadruples
#12

What is the gravitational force between two objects proportional to?

The square of the distance between them
The cube of the distance between them
The square root of the distance between them
The inverse of the distance between them
#13

What is the gravitational force between two objects inversely proportional to?

The square of the mass of one object
The cube of the mass of one object
The distance between the objects
The square root of the mass of one object
#14

Which law states that every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers?

Newton's First Law
Newton's Second Law
Newton's Third Law
Newton's Law of Universal Gravitation
#15

If the distance between two objects is halved, how does the gravitational force between them change?

It is halved
It is quadrupled
It doubles
It remains the same
#16

What is the unit of gravitational constant G in the equation F = (G * m1 * m2) / r^2?

m/s^2
N/m^2
N/m
m^3/(kg * s^2)
#17

What happens to the gravitational force between two objects if the distance between them is tripled?

It is halved
It triples
It becomes nine times smaller
It becomes nine times larger

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