Newtons Laws

Vocabulary

Using Formulas

Motion questions

Graphing

100

You are in a car driving down the road when suddenly you stop to avoid a dog in the road. You are pushed forward and then back by the seatbelt. This is an example of which of Newtons 3 laws?

first.

An object in motion will stay in motion until.....

100

Define inertia.

The tendency of an object to keep doing what is is already doing.

100

What is the force of a soccer player kicking at soccer ball at the rate of 15.6 m/s^{2 } if the soccer ball weighs 2 kg?

Include units

31.2 Newtons

15.6 x 2 =

100

A person hammers a nail into a board. The Force of the hammer is ___>,<,=,X____ then the nail.

greater than

100

What is the speed in the graph shown above?

14/16 =

.87 km/hr

or

.875 km/hr

200

A toy truck weighing 2 kg was able to accelerate at 5 m/s^{2. }

According to Newtons second law what was the trucks overall force?

10 Newtons.

200

Define Friction.

the resistance that one surface or object encounters when moving over another

200

A train travelled 40 kilometers at a rate of 16.5 kilometers per hour. How long did it take the train to make the trip?

2.42 Hours

40 / 16. 5 =

200

Which side of the scale is experiencing an unbalanced force?

the left.

200

Did students A, B, or C make any stops on their way to the bus?

No but they all went at different speeds.

300

A student stretching a rubber band to try to hit another student with it is breaking the rules while also demonstrating Newtons ____ law.

3rd.

Action - stretch. Reaction let go and the rubber band flies

300

Define kinetic energy and describe where it would be HIGHEST on a roller coaster.

kinetic energy is energy in motion.

K.E is highest at the bottom of a roller coaster.

300

What is the overall force of a car hitting a pole if the car weighs 27 kilograms and was travelling at a rate of 14.5 m/s^{2}?

14.5 x 27 =

391.5 Newtons

300

Where is kinetic energy the highest on this chart?

Position B - cannot bounce as high after that moment

300

What does constant speed look like on a speed time graph?

Horizontal (flat ) line

400

A student falls off a skateboard and falls forward. This represents which of Newton's laws?

3rd law.

400

Define acceleration.

The rate of change in an object's speed.

Each second PER second.

400

What is the speed of a bicyclist if they travelled to work in 7.5 minutes and had to peddle approximately 15 miles?

15/7.5 =

2 miles per minute

or 2 mi/min

400

Daily Double - make your wagers

Where is potential energy highest?

Where is kinetic energy highest?

400

How do you represent no speed on a distance-time graph?

a flat (horizontal) line

500

You are pushed back into your chair when an airplane begins to take off.

Newtons 1st law. Object at rest will stay at rest until. . . .

500

Define unbalanced force.

Forces that cause change on another object whether in motion or stationary.

500

What is the acceleration of a trash bag flowing through the wind that hits a tree at 49 Newtons if the bag weighs 3.5 kilograms?

49/3.5 =

14 m/s^{2}

500

What is the difference between speed and velocity?

Speed is the total distance over time

Velocity is speed in a given direction

500

write all 3 versions of the speed formula

s= d/t

d=s(t)

t=d/s