Lesson 1:Forces
Lesson 2:Newton's Laws
Lesson 3:Mechanical Energy
100

Define the word force in simple terms

a push or pull

100

Write the 3 laws of motion using their shortened name by filling in the blanks below:

1st - Law of ___________

2nd - Law of ___ = _______

3rd law _____-______ Law

1st = Law of INERTIA

2nd = Law of F = MA

3rd = Action-Reaction Law

100

Potential energy is energy ____________ due to the object's _____________

Kinetic energy is the energy of ___________

stored

position (or height)

motion (or movement)

200

DAILY DOUBLE

FOR 400 POINTS (CLOSEST ANSWER WINS)

What year did Isaac Newton write and publish his Laws of Motion describing Forces?

1687

200

Which law is best shown by the below image?

Newton's first law, Law of Inertia (dirt stays motionless, racket moves downward because a force is applied to it, but not the dirt. THEN, gravity pulls the dirt down.)

200


A. Point W

300

What 3 things can forces do?

Change speed, change direction, change shape/size

300

In regards to Newton's 2nd Law, What 2 things could you specifically change to a rocket to make it ACCELERATE FASTER? (Note, you cannot change the shape of the rocket)

More Force or Less Mass

300

1) What two variables can you change to INCREASE the KINETIC ENERGY of an object?

2) What two variables can you change to INCREASE the POTENTIAL ENERGY of an object?

1) Add more mass and add more speed

2) Add more mass and add more height

400

Fill in the missing Force amounts for letters A, B, and C, so that the Fnet (Net force) shown below each image is made true

A = 50 Left

B = 200 up

C = 1100 up

400

Which car would produce more force against a wall, or hit harder on a wall? EXPLAIN YOUR ANSWER CHOICE 

Trick Question: Both could hit with more force than the other, It depends on how fast they are moving too.

If the large truck is moving very slowly, it will not hit a wall with much force. But if the small car was moving very quickly, it would definitely hit with more force.

F = M x A

400


B

If all speeds are the same, the only difference is mass, and the object with the most mass can cause the most change (or has the most energy)

500

Decide if the following is balanced or unbalanced and explain your answer correctly:


Human floating through space

Balanced, nothing is there to push or pull on the astronaut, therefore no forces = Balanced.

500

Calculate the ACCELERATION of this object:

(Hint: find net force AND THEN use Newton's 2nd law equation)


Step 1) Net force is 75 N (25 + 50)

Step 2) Plug into F=MA --> 75 =(5)(A)

Step 3) Solve for A --> A = 15 m/s2

500


D. Bag B has less kinetic energy than Bag A at the same level as it falls.

Because Bag B has less mass, it will have LESS kinetic energy than Bag A