Astronomy Forces

Front

What does Newton's First Law of Motion state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

Front

Which of the following equations represents Newton's Second Law of Motion? F=ma, F=​r​2​​​​Gm​1​​m​2​​​​, F=​2​​1​​mv​2​​, F=​r​​mv​2​​​​

Back

F=ma

Front

According to Newton's Third Law, if you push against a wall with a force of 10 N, what force does the wall exert on you?

Back

10 N

Front

Which of the following is an example of Newton's First Law? A car accelerating when the gas pedal is pressed. A book remaining at rest on a table. A rocket launching into space. A ball bouncing off a wall.

Back

A book remaining at rest on a table.

Front

If a 5 kg object is accelerating at 2 m/s², what is the force applied to it according to Newton's Second Law?

Back

10 N

Front

Which of the following scenarios best illustrates Newton's Third Law of Motion? A car stopping at a red light. A swimmer pushing water backwards to move forward. A ball rolling down a hill. A book falling off a table.

Back

A swimmer pushing water backwards to move forward.

Front

Calculate the gravitational force between two 10 kg masses separated by a distance of 2 meters. (Use G=6.674×10​−11​​Nm​2​​/kg​2​​)

Back

1.67×10​−10​​N

Front

Which of the following is an application of gravity? The orbit of the Moon around the Earth. The acceleration of a car. The lift of an airplane. The friction between two surfaces.

Back

The orbit of the Moon around the Earth.

Front

If the mass of an object is doubled, how does this affect the gravitational force it experiences from another object?

Back

The gravitational force is doubled.

Front

Which of the following best describes the concept of inertia? Options: The tendency of an object to accelerate., The tendency of an object to resist changes in its state of motion., The force exerted by a surface as an object moves across it., The force that pulls objects toward the center of the Earth.

Back

The tendency of an object to resist changes in its state of motion.