Mass
Velocity
Newton
Sir Isaac Newton
Gravity
100
This acts in a direction opposite to the direction of an object's motion.
What is Friction?
100
The resistance of a change in motion of an object that is at rest or moving, unless acted upon by a force.
What is Inertia?
100
A force that can cause an object's motion to change.
What is an unbalanced force?
100
The amount of matter in an object.
What is Mass?
100
Which of Newton's Laws states the relationship of mass, acceleration, and force by using this equation: Acceleration = Force divided by Mass
Newton's second law of motion?
200

Mass is the measurement of how much __________ is in an object. 

Matter

200

Which measurement would be different if you were on the moon instead of the Earth?

Weight

200
The measure of the force of gravity on an object.
What is weight?
200
Air rushing against an airplane is an example of what type of friction?
What is fluid friction?
200

The force of Gravity between two objects is affected by which two factors?

Mass and Distance

300
This characteristic of a group of moving objects remains the same unless an outside force acts on the objects.
What is momentum?
300

Which two factors keep a planet in orbit?

Gravity and Inertia

300
True or False? According to Newton's second law of motion, velocity increases as force increases, if mass stays the same.
False: acceleration increases as force increases, if mass stays the same.
300
True or False? The force due to gravity is stronger if two objects are closer.
True
300

Why are things weightless in outer space?

Because there is no gravity in outer space.

400
True or False? A satellite in orbit around Earth is never falling toward Earth.
False
400

True or False: Your MASS will be the same no matter which planet you are on.

True

400

What unit is used to measure force?

A Newton

400
What forces are acting on you when you slide down a water slide? What type of friction is present? If the water slide were dry, would the amount of friction be different? Explain
Gravity is the force that pull you down the slide. Fluid friction occurs between water and the person. Sliding friction would exist if the slide was dry. Sliding friction is greater than fluid friction. The person may not go down the slide.
400
An astronaut throws a ball on the moon, where there is no air. At the same time someone throws a ball on earth using the same force. Which ball will travel a greater distance before it hits the ground? Explain.
The ball thrown on the moon will travel the greatest distance because there is no air resistance on the moon. The force of gravity is also greater on the ball that was thrown on earth. Air resistance and gravity decrease the distance a ball with travel here on earth.
500
Blowing up a balloon and holding the untied ends closed is an example of which of Newton's laws. Why?
This is an example of Newton's third law: Action/Reaction Pairs. The balloon will move away from the open end because the air that is released exerts a force on the balloon that pushes it away from the open end.
500

Gravitational interactions are attractive and depend on _______ (mass or weight)?

Masses of the interacting objects.

500

Finish the sentence: As distance increases between two objects 

Gravitational pull decreases

500

Weight is the measure of the force of ________ on an object.

Gravity

500
What are the two factors that affect the gravitational attraction between objects?
Mass and distance. More mass = greater amount of gravity it takes to hold the object down. Farther apart an object is the lesser the gravitational force between them.
M
e
n
u