Motion
What are the definitions of distance and displacement?
Distance is the total amount of ground covered. It is scalar with only magnitude. Displacement is the distance from the starting point. It is vector and has direction and magnitude.
What is Newton's third law of motion?
With every action there is an opposite and equal reaction.
What is a force?
A push or pull one object exerts on another.
___ is used when unbalanced forces are acting up on an object.
Work
What is energy?
The ability to do work(the ability to cause something to move).
What is velocity
The rate of the displacement of an object's motion per second.
What is Newton's first law of motion?
An object at rest stays at rest, an object in motion stays in motion at a constant velocity unless acted upon by an unbalanced force.
A chair has a mass of 200kg. It is dropped off a building. With what force will it hit the ground? Assume there is no air resistance.
1960N
What is power?
The rate of doing work. (work/time)
A lighter is used to start a fire. Name the energy transformation that occurs.
Chemical to Thermal
If a person ran 30 kilometers in 10 seconds, what was their speed?
3000m/s
What is Newton's second law of motion?
The force acting upon an object is equal to the mass times the acceleration caused by the force.
A mouse is running with an average velocity of 20m/s. It is running with a force of 400N. What is the mouse's mass?
10kg
A person is doing 102 J of work on an object for 3 seconds. What amount of power is the person using to move the object.
34 watts
What are the seven different types of energy?
Mechanical, Chemical, Nuclear, Sound, Radiant, Electrical, and Thermal
If a squirrel ran 10 meters to a tree, then ran back 5 meters, then past the tree by 5 meters. What was the squirrel's displacement from the start. If it took the squirrel 3.5 seconds to reach the final position, what was the squirrel's average velocity?
Displacement = 15 meters.
Average velocity = 4.3m/s
What is inertia?
A property of matter that allows an object in motion to stay in motion at a constant velocity or an object at rest to stay at rest unless acted upon by an unbalanced external force.
A cat that has a mass of 2 kilograms runs a distance of 52 meters in 5 seconds. With what force is the cat running?
8.32 N
A person with a mass of 203 kg runs 3 meters in 10 seconds. What power is the person using to run that fast.
3.7 Watts
What is the unit for energy? Hint: think food labels
Calories
What is the acceleration of someone that starts from rest and goes 2 meters in 3 seconds?
0.2m/s2
A ball bouncing causes a reaction from the initial action of the ball bouncing. What law does this directly relate to?
Newton's third law of motion.
If someone uses a force of 500 N, goes a distance of 3 meters, and has a mass of 59 kg, how long does it take the person to run 3 meters?
0.84 seconds
If a person uses 3 watts of power in 10 minutes, and goes 5 feet, with what force is the person using to move?
1181.1 N
What are the types of radiant energy? Name 4
Visible light, infrared, gamma rays, microwaves, ultra-violet, radio waves, x-rays