Momentum
Newton Laws
Potential/Kinetic Energy
Gravity
100
what is momentum?
the quantity of motion of a moving body.
100
What are the 3 Newton Laws?
- Every object in a state of uniform motion will remain in that state of motion unless an external force acts on it.
- Force equals mass times acceleration [
]. - For every action there is an equal and opposite reaction.
100
Give some examples of potential energy
Any object that is at rest position has potential energy. For example, a book on a table, water in a lake, trees, and mountains have potential energy.
100
What is the definition of gravitational force?
a force that attracts any two objects with mass
200
what is the formula to find Momentum?
p=M times V
200
What happens according to Newton if you let an untied balloon go?
It's the 3rd Law, Air will rush out of the balloon forcing the balloon to move through the air in the opposite direction, but equal in force.
200
What is the formula for potential energy?
PE=mgh
200
The gravitational force between objects A and B is 4 newtons. If the mass of B were one-half as large as it currently is while A’s mass remains the same, how large is the gravitational force?
2 N
300
What happens if the speed and mass of an object are doubled?
The kinetic energy of the object is multiplied by 8
300
Describe what happens if you are riding a skateboard and hit something (like a curb) with the front wheels.
Its the 1st Law, Your body will keep moving forward and fly off your skateboard since the curb only stops the board, not yourself.
300
List various types of potential energy
- Elastic potential energy
- Electric potential energy
- Chemical potential energy
- Nuclear potential energy
- Gravitational potential energy
400
How long does it take a 2000-Kg car to stop from a velocity of 35 m/s if a braking force of 4000 Newtons is used?
17.5 seconds
400
Describe what happens if you try and push Jacob. What happens if he pushes back?
If you put force on Jacob, force will be put back on you. Because of Jacob's mass, you most likely will not have enough force to make him accelerate. If he pushed you, you most likely would move in the direction of the force since he has more mass.
400
What is Kinetic Energy? What is the formula?
Kinetic energy is a type of energy that an object has because of its motion. K=1/2mv^2
500
A 5.0 kg mass has its velocity change from 8.0 m/s east to 2.0 m/s east.
Find the objects change in momentum.
F = 20. N East
500
How do Newton’s laws affect your daily life?
everything that happens in our lives can be connected back to one of Newton’s 3 laws of motion since force is involved in everything.
500
List various types of kinetic energy.
- Thermal energy
- Sound energy
- Radiant energy
- Electrical energy
500
Suppose two satellites that orbit the earth passes close to each other. Also, for a moment they are 100 m apart. Furthermore, the masses of the satellites are 300 kg and 20 kg. So, calculate the magnitude of the force of gravity between these satellites?
Fg ≅ 4.00×10−11N