Textbook Vocabulary
Matter in Motion
Balanced and Unbalanced Forces
Newton's Laws of Motion
Calculate That Problem
100

Define net force the way it is stated in the text.

The net force on an object is the combination of all the forces on the object.

100

When you change your __________, you experience motion.

position

100

An arrow representing a greater force would be (longer/shorter) than an arrow representing a lesser force.

longer

100

Whenever a force is exerted both an _________ force and a _________ force are present.

action, reaction

100

What is the net force if there is 2 N acting upwards, and there is 5 N acting downwards?

-3 N (3 N down)

200

Define average speed the way it is stated in the text.

The average speed of a moving object is the total distance traveled over the total time of travel.

200

Acceleration can be caused by a change in speed, a change in direction, or ______.

Both.

200

If forces are balanced, the motion of an object (changes/does not change).

does not change
200

According to the law of inertia, an object at rest will remain at rest unless it is acted upon by an __________ ______.

unbalanced force

200

What is the distance that Jake travelled if he jogged 5 m/s for 65 seconds?

325 meters

300

Define Newton's Laws of Motion.

They describe the relationship between forces, matter, and motion.

300

A distance-versus time graph is used to describe ________.

Speed

300

What is the formula for force and define what each variable means

F = ma; F = force, m = mass, and a = acceleration.

300

Acceleration depends on the _______ of an object and the _______ applied.

mass, force

300

If the driver of a car started at a stop sign and accelerated to a speed of 25 meters/second in 3 seconds going north, what is his acceleration?

8.33 meters/second^2

400

Define inertia the way it is stated in the text.

Inertia is the tendency of an object to resist a change in motion.

400

Velocity is a ________ quantity.

vector

400

If someone threw an object, what would be the force acting upon that object to counter the person's force.

Gravity

400

How does friction work?

It acts in a direction to oppose the motion between 2 objects (ex. ground and ball).

400

How much force is needed to accelerate a 1400 kg 2 m/s?

2800 N (Newtons)

500

Define velocity the way it is stated in the text.

The velocity of an object is its speed combined with the direction of motion.

500

What is instantaneous speed?

The speed of a moving object at a certain point of time.

500

What are the 4 forces that act on a plane

Thrust, Gravity, Air Resistance, and Lift

500

What was Issac Newton's anthology of books in which he used complicated geometry to describe the motion of objects.

PhilosophiƦ Naturalis Principia Mathematica (or accept Principia)

500

What is the speed of someone that travels 25 meters in 2 seconds?

12.5 m/s

M
e
n
u