Science Force and Motion
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What is Speed?
The measure of Distance and Object moves in Time
What is Velocity?
An object's Speed in a certain Direction
What is Acceleration?
The Rate at which the velocity of an object changes over time. (Speeding up, Slowing or turning)
What is "Force"?
A Push or a Pull that acts on an object.
What is "Friction"?
A force that results when two materials rub against each other.
What is "Gravity"?
Force of Attraction that exists between any two objects. causes objects to have weight.
What is "Kinetic energy"?
Energy due to Motion.
What is "Potential Energy"?
Energy that is Stored in an object due to it's position or arrangement
What is "Unbalanced Forces"
Unbalanced forces are not equal and cause an object to to change it's motion
What is "Balanced Forces"?
Balanced forces are equal and do not change a way an object moves.
What is "Momentum"?
characteristic of a moving object as related to mass and velocity
What is "Inetia"?
The tendency of an object to Resist motion
What are "Newton's 3 Laws of Motion"
Newton's First Law: "An object at rest will remain at rest, and an object in motion will remain in motion in a straight line until an outside force acts upon it."
Newton's Second Law: "An object's acceleration depends on the size and direction of the force acting on it and on the mass of the object"
Newton's Third Law: "For every action action, there is an equal and opposite reaction"
Acceleration is the measure of an object's ________
What 3 things can an object do when it accelerates?
Speed up, Slow down, Turn
What affects the Momentum of an object (think of the experiment with clay balls)
mass and velocity
Draw a picture of each of Newton's 3 laws
- 1. football at kickoff
- 2 . Train engine must exert enough force to pull heavy train cars.
- 3. newton's craddle
will object of large mass or small mass have greater acceleration when equal force is applied to them.
Explain the difference between balanced and unbalanced forces
Balanced forces are equal and thus do not change the way an object moves. Unbalanced forces are not equal and cause and object to change it's motion.
Explain the difference between kinetic and potential energy?
Kinetic is energy due to motion. Potential energy is stored in an object due to its position or arrangement.
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