Vocabulary I
How much do you know?
Motion
Mix
Force
100

Define: Force

A push or pull with size and direction.

100

What are the SI units for a Newton?

kg*m/s 2

100

An object watched in the background used to perceive motion is referred to as a ____________

reference point

100

Calculate the speed of an object that travels 24 meters in 4 seconds. You need units for credit.

6m/s

100

On a force diagram of a box, 3N of force is applied to the top and bottom. There is a force from the left of 6N and a force from the right at 9N. Which way does the box move?

To the left

200

The measure of gravitational force on an object is what?

Weight

200

When does gravitational force increase?

The closer you are to an object with more mass. 

200
What is the difference between speed and velocity?

Velocity has direction.

200

What is the resultant velocity of a person travelling north on a train at 20m/s whilst walking to the front of the train at 2m/s?

22 m/s north

200

If a student rides her bicycle on a straight road and does not speed up or slow down, she is traveling with a _____________.

constant velocity.

300

This is the combined total forces acting on an object

Net Force

300

What factors affect the universal law of gravitation?

mass and distance.


300
Give me the equation for acceleration and the proper units.

Vf - Vi / change in time

 (m/s2)

300

What is an unbalanced force?

A force greater than 0 Newtons. 

300
How is it possible to be accelerating while travelling at a constant speed? 
If you are travelling on a circular path.
400
Defined as the change in velocity

Acceleration 

400

An object will always move in the direction of the ________________

greatest force.

400

Can acceleration be positive and negative?

Yes, because you can accelerate and decelerate 

400
Explain the motion of balanced forces

They have a net force 0. They have equal and opposite forces holding them in place

400

How are speed, velocity and acceleration related?

They are a relation of distance and time.

500
Define: Resultant Velocity

A the sum of all velocities in a given system. 

500

What is the difference between mass and weight?

Mass- the measure of the amount of matter in an object

Weight- the measure of the gravitational force acting on an object.

500

Why is it that when you are completely still, you are still experiencing acceleration?

You are not only subject to Earth's rotation on an axis, you are also subject to the elliptical rotation around the sun. An object travelling in a circular motion is always changing velocity, therefore acceleration.

500

Does friction move in the same or opposite direction of a moving object?

opposite. It opposes motion.

500

The gravitational force between 1kg of steel and 1kg of marshmallows on Earth is the ______________

same.

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