Force and motion

What is Isaac Newton's first law of motion?

• Law of inertia

• F=ma

• forces come in pairs

• none of above

Answer explanation

Law of inertia is the law:

An object at rest stays at rest and an object in motion stays in motion unless acted upon an unbalanced force.

What is force

• the heaviness of an object

• a force that pulls objects towards earth

• A push or a pull

• increasing in speed

Answer explanation

The real definition of force is a push or a pull.

For example I push a toy car or pull a door open or closed, I am applying force to the objects.

What is motion?

• the heaviness of an object

• resistance when two objects rub together

• the act of moving or being moved

• increasing in speed

Answer explanation

motion is actually the act of moving or being moved. For example we move desks, we are applying motion.

What is Newton's second law of motion

• forces come in pairs

• law of inertia

• F=ma

• none of above

Answer explanation

F=ma aka (also known as):

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

What is acceleration?

• amount of space between two objects

• how fast or slow something moves

• push or pull

• increasing in speed

What is Newton's third law of motion?

• force comes in pairs

• F=ma

• law of inertia

• none of above

What is the definition of gravity?

• a force that pulls objects towards earth

• increasing in speed

• the heaviness of an object

• push or pull

What is speed?

• how fast or slow something moves

• push or pull

• increasing in speed

• amount of matter in an object

what is velocity?

• the speed of something with direction

• increasing in speed

• the heaviness of an object

• amount of space between 2 objects

What is weight?

• increasing in speed

• push or pull

• the heaviness of an object

• how fast or slow something moves