Vocabulary
What is force?
Force is a push or pull
Complete: For every action, there is an equal and opposite______
Reaction
Give an example of a pull force and a push force
Pull -- Taking a book off the shelf, zipping up a zipper, etc.
Push -- kicking a soccer ball, pressing a key on a keyboard.
Newton's second law: Force =
Mass x accelleration
Force is_______.
push or pull
Moving energy is known as this.
kinetic energy
The law of Inertia states an object at rest________.
Stays at rest
On earth, these two forces cause a ball that is thrown into the air to slow down and then return to the ground.
Gravity and friction
speed OR direction
Direction is ____________
which way an object is moving
This describes objects with mass pulling closer together.
Gravity
Force = Mass x acceleration is Newton's ____ law
2nd
If I drop a full water bottle, a half empty bottle and an empty water bottle down the slide at the same time, which reaches the bottom first?
Full bottle, because it has more mass.
Who is Isaac Newton?
A scientist who came up with laws about forces and motion.
How could you increase the potential energy in an object?
Increase its height or its mass
Which term describes how fast an object is going along with its direction
Velocity
According to Newton's third law of motion, for every action there is ______?
An equal, and opposite, reaction
What is an example of friction?
Ex. brakes on a car and sandpaper against tires
Sitting on the top of a cliff is an example of what type of energy
Potential
What is the name of the unit that is used to measure force?
1) Grams2) Meters
3) Newtons
4) Miles per hour
5) Gallons
3) Newtons
How do you measure speed?
Distance divided by time or the distance traveled by an object in a period of time.
If you push an empty garbage can and canteen table with the same amount of force, which will go further and why?
The garbage can because the mass is less compared to the force needed to move the larger mass (canteen table).
Name one example of kinetic and potential energy?
Kinetic energy - skiing down the ski slope
potential energy - sitting at the top of a ski slope
After jumping from a plane, as you parachute down to earth you are an example of what kind of energy?
Kinetic
A seat belt in a car is an example of ______.
friction