Newton's First Law

Which of the following objects is at rest? A. A moving car B. A stationary rock C. A flying bird D. A running cheetah

• A. A moving boat

• C. A flying fish

• B. A stationary rock

• D. A sprinting turtle

Explain the concept of inertia in your own words.

• Inertia is the tendency of an object to speed up when a force is applied to it.

• Inertia is the resistance of an object to changes in its state of motion.

• Inertia is the measure of an object's weight.

• Inertia is the ability of an object to move freely without any external force.

Describe what happens when balanced forces act on an object.

• The object accelerates in the direction of the force

• The object remains at rest or continues to move at a constant velocity.

• The object changes color

• The object disappears

What is the result of unbalanced forces acting on an object?

• No motion

• Deceleration

• Acceleration

• Balanced forces

Which of the following is an example of Newton's first law? A. A ball rolling down a hill B. A book falling off a table C. A car coming to a stop D. A soccer ball staying still on the ground

• C. A car accelerating

• D. A soccer ball staying still on the ground

• B. A book floating in mid-air

• A. A ball rolling up a hill

Apply Newton's first law to a real-life scenario of a car suddenly stopping.

• The car's inertia wants to keep it moving forward, but the brakes provide the external force needed to stop the car.

• The car's inertia causes it to stop immediately without any external force.

• The car's brakes push it forward to stop it.

• The car's engine stops working, causing it to halt.

Identify an object in your surroundings that is at rest due to inertia.

• clock

• pen

• chair

• book

Explain why a heavy object requires more force to move than a light object.

• A heavy object requires more force to move because it is painted red

• A heavy object requires more force to move because it is happier

• A heavy object requires more force to move because it has a higher IQ

• A heavy object requires more force to move than a light object because it has more mass and therefore more inertia.

Describe a situation where balanced forces are acting on an object.

• A ball rolling down a hill

• A book placed on a table with gravitational force balanced by the normal force from the table.

• A rocket launching into space

• A car accelerating on a straight road

Recognize an example of Newton's first law in a sports activity.

• Tennis

• Basketball

• Baseball

• Soccer