Vocabulary More Vocabulary (2 words) Laws of Motion Speed Newton’s Toy Box Miscellaneous 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

The rate at which an object changes velocity The rate at which an object changes velocity. Examples are speeding up, slowing down, and changing directions

Acceleration

A resistance force caused when two surfaces touch or rub against each other

Friction

A force that exists between any two objects that have mass, pulling them together

Gravity

The tendency of an object to continue resting or to continue moving

Inertia

An object’s speed will _________ if rolling down a hill.

Increase

A force that pushes against an object moving through air

Air Resistance

Who is the scientist that came up with the 3 Laws of Motion?

Isaac Newton

In order to calculate Force, you need to know the ______ and ________.

Mass Acceleration

What are astronauts experiencing when they seem to “float” in their spacecraft? It is also called this when a parachuter jumps out of an aircraft.

Free Fall

Two things you need to know to calculate Speed.

Distance, Time

According to Newton’s Second Law, acceleration depends on the mass of the object and the ______ of the force.

Size

Which of Newton’s Laws says that force is equal to mass times acceleration? (F= MxA)

Newton’s Second Law of Motion

Which of Newton’s Laws is also known as the Law of Inertia?

The First Law of Motion

According to Newton’s Third Law of Motion, action-reaction forces are equal in strength and _________ in direction.

Opposite

Which Law explains why we wear seatbelts?

First Law

If you drive a car 100 miles in 2 hours, what is your speed?

50 mph

It took a train 10 hours to travel 700 miles. How fast was it traveling?

70 mph

If a snail travels 30 feet in 2 hours, how fast is the snail traveling?

15 fph

A family drove 50 miles in the first hour of their trip, 60 miles in the second hour, and 40 miles in the third hour. What was the average speed they traveled?

50 mph

The Smiths drove exactly 70 miles per hour and their trip took 4 hours The Smiths drove exactly 70 miles per hour and their trip took 4 hours. How many miles did they travel?

280 miles

What is the Formula for calculating the Average Speed of a moving object?

Speed = Distance Time

In Science, a FORCE is defined as any _____ or ______

Push or Pull

The force of Friction exists when 2 objects ________

Are in contact (touch or rub each other)

A moving car changes ________ compared with nonmoving reference points.

Position

Why does a flat sheet of paper fall more slowly than a sheet of paper crumpled into a ball?

The flat sheet of paper has a larger surface area and greater AIR RESISTANCE.