Q3 Final review

What is the acceleration due to gravity on Earth?

• 6.5 m/s^2

• 10.2 m/s^2

• 8.7 m/s^2

• 9.81 m/s^2

How does air resistance affect the motion of falling objects?

• Air resistance causes falling objects to float

• Air resistance speeds up falling objects

• Air resistance has no effect on falling objects

• Air resistance slows down falling objects and can eventually lead to a constant velocity called terminal velocity.

According to Newton's law of universal gravitation, what two factors affect the gravitational force between two objects?

• Mass of the objects and distance between the centers of the objects

• Color of the objects and shape of the objects

• Speed of the objects and time of day

• Temperature of the objects and material of the objects

What is the formula to calculate the force of gravity between two objects?

• F = G * (m1 * m2) / r^2

• F = G * (m1 + m2) / r^2

• F = G * (m1 - m2) / r^2

• F = G * (m1 * m2) * r^2

How does the mass of an object affect its acceleration due to gravity?

• The acceleration due to gravity increases as the mass of an object increases.

• The greater the mass, the greater the acceleration due to gravity.

• Objects with more mass fall faster due to gravity.

• The mass of an object does not affect its acceleration due to gravity.

Explain why a feather falls slower than a rock in the absence of air resistance.

• The feather falls slower because it has less air resistance than the rock.

• The feather falls slower due to its larger surface area compared to its mass, resulting in more air resistance slowing it down.

• The feather falls slower because it is heavier than the rock.

• The feather falls slower due to its smaller surface area compared to its mass.

What is the relationship between distance and gravitational force according to Newton's law of universal gravitation?

• The gravitational force is inversely proportional to the square of the distance between two objects.

• The gravitational force increases as the distance between two objects increases.

• The gravitational force remains constant regardless of the distance between two objects.

• The gravitational force decreases as the distance between two objects increases.

How does air resistance change the acceleration of a falling object?

• Air resistance has no effect on the acceleration of a falling object.

• Air resistance increases the acceleration of a falling object.

• Air resistance decreases the acceleration of a falling object.

• Air resistance changes the direction of acceleration of a falling object.

What is the difference between weight and mass in the context of gravity?

• Weight is the force exerted on an object due to gravity, while mass is the amount of matter in an object.

• Weight and mass have no relation to each other in the context of gravity.

• Mass is the force exerted on an object due to gravity, while weight is the amount of matter in an object.

• Weight is the same as mass in the context of gravity.

How does the gravitational force between two objects change if the distance between them is doubled?

• The gravitational force between two objects remains the same.

• The gravitational force between two objects decreases by a factor of 2.

• The gravitational force between two objects decreases by a factor of 4.

• The gravitational force between two objects increases by a factor of 2.