Gravity & Circular Motion Review

How does the gravitational force the Earth exerts on the sun compare to the gravitational force the sun exerts on the Earth?

• The gravitational force the sun exerts on the Earth is larger

• The gravitational force the Earth exerts on the sun is larger

• Their gravitational forces are equal

• There is not enough information

Tags

NGSS.HS-PS2-4

As two objects get closer together, what happens to the force of gravity between them?

• The force of gravity increases

• The force of gravity decreases

• The force of gravity stays the same, since their masses are constant

• Not enough information

Tags

NGSS.HS-PS2-4

A ball on a string is spun around in a circle. Which of the following quantities is not constant?

• mass

• force

• velocity

• acceleration

A yo-yo is whirled on a string, then the string breaks. What causes the yo-yo to move off in a straight line?

• centrifugal force

• centripetal force

• inertia

• centripetal acceleration

As an astronaut travels far away from Earth, his weight

• increases because gravity increases.

• decreases because her mass decreases.

• remains the same because her mass remains the same.

• decreases because gravity decreases.

Tags

NGSS.HS-PS2-4

How does the force of gravity between two objects change when the mass of one of the objects increases?

• Fg increases

• Fg decreases

• It depends on the distance between the objects

• Fg stays the same

Tags

NGSS.HS-PS2-4

A 12 kg object undergoes circular motion with a radius of 4 m and a speed of 18 m/s. What is the centripetal acceleration of the object?

• 1.125 m/s²

• 81 m/s²

• 4.5 m/s²

• 36 m/s²

Tags

NGSS.HS-PS2-1

The diagram shows an object traveling at a constant speed in a circular path. Which labeled arrow represents the centripetal force acting on the object?

• W

• Z

• X

• Y

Tags

NGSS.HS-PS2-1

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

Tags

NGSS.HS-PS2-4

As the distance between 2 objects increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

Tags

NGSS.HS-PS2-4