Newton's Laws
Forces
Energy and Energy Transfers
Waves
Random
100
This is the natural tendency of objects to resist a change in motion.
Inertia
100
What main type of force exists when pushing a door open (the reason the door opens)?
Applied Force
100
The Law of conservation of energy is ...
Energy cannot ________. However it can be ____.
Created nor destroyed, transformed to other forms.
100
What is a mechanical wave?
A wave that travels only through a medium
100
What would happen to gravity if the Earth were twice as large?
The gravitational force between humans and Earth would increase and we would feel more weight and harder to move.
200
You run into your friend while skating and both of you fall in opposite directions. This is an example of which law of motion?
Newton's 3rd Law
200
The support force exerted on an object that touches another stable object.
What is the normal force?
200
Knocking on a door would be what type of energy transfer?
Mechanical ----> Sound
200
What is a transverse wave?
The motion of the wave is up and down and the energy is left to right (Perpendicular relationship).
200
You are thrown off the front of a 4 wheeler when it runs into a fence. This is an example of which law of motion?
Newton's 1st Law
300
Fill in the blank: An object in motion will ___ in ____ and an object at ___ will stay at ____ unless a/an _______ force acts upon it.
stay, motion
rest, rest
unbalanced
300
What is the relationship between mass and gravitational force?
The greater the mass of an object, the stronger the gravitational force it exerts.
300
Plugging in then turning on Christmas lights would be what type of energy transfer?
Electrical ----> light
300
If I place a ping pong ball on an ocean wave, where will it end up. Explain
Because water waves are transverse, the ping pong ball will move to and down with the wave but not change the position it started in.
300
How can you reduce friction between two surfaces?
Make the surface slippery by adding water, ice, or oil.
400
Explain how a car collision with another car demonstrates all 3 of Newton’s laws.
1. The people in the cars will continue moving forward unless they are stopped by the seatbelt/air bag
2. The smaller car gets more damage.
3. Both cars will exert an equal and opposite force on each other, making them jolt back.
400
What has to be true about the strength friction and the strength of an applied force in order to get something to slide on the floor?
Applied force must be stronger than frictional force to get something to move.
400
Explain the energy transfer from the start to the end of this roller coaster:
A has all PE
B has 50/50 KE and PE
C is all KE
D is 50/50 KE and PE
400
Explain how heat and light reaches earth from the sun.
Light and heat waves can move through space because they are electromagnetic and do not need a medium to travel through. Because of this, light and heat from the sun travels one waves and reaches earth.
400
- If a cart has a mass of 100 Kg and is pushed with a force of 200 N, what is its acceleration?
- 2 m/s2
500
F = M * A
What does each letter stand for and what does this law mean?
Force = Mass * Acceleration
More mass requires more force to accelerate. Objects with more mass will accelerate less than objects with less mass if the same force is applied.
500
Calculate the net force as a vector:.jpg)
30 Newtons to the left.
500
Explain why the first hill on a roller coaster has to be the highest.
The first hill builds up all the energy for the rest of the roller coaster. If any other hill is higher, the roller coaster will not be able to make it up on its own.
500
Label the parts of the transverse wave:
A: Crest
B: Amplitude
C: Trough
D: Wavelength
500
Label the Longitudinal wave:
A: Compression
B: Rarefaction
C: Wavelength
D: amplitude