Energy
What type of Energy is known as stored energy?
Potential Energy
What is an axle?
The rod that connects wheeles together
Calculate the speed of baseball that travels 40 meters in 2 seconds
20m/s
(meters per second)
What is Newton's first law?
Things in motion stay in motion, things that are not in motion stay not moving
What is a unit of measuring distance?
Meters, feet, miles, etc...
What type of energy is energy in motion?
Kinetic Energy
What is the difference between a wheele and a gear?
Wheeles are smooth and can roll
Gears have "teeth"
How far does a train travel in 4 hours if it is traveling at 22.5 miles per hour?
90 miles
What is Newton's 2nd Law?
Force is equal to mass times acceleration
F = m x a
What is a unit of measuring time?
minuets, seconds, hours, days etc...
A battery holds what type of energy?
Potential (chemical) energy
What type of pulley changes the direction of the force required, but does not reduce the amount of force needed?
Fixed Pulley
5 hours
All forces have an equal and opposite force!
What is a unit of Force?
Newtons (N)
At what point on your roller coaster did the marble have the most potential energy?
At the top of the coaster!
A seesaw is an example of what class of lever?
1st class lever
100 Newtons
A rocket launcing into space is an example of which of newton's laws?
Newton's 3rd law --> Equal and opposite Forces
What is the unit of Energy?
Joules (J)
At what point on your paper roller coaster did the marble have the most kinetic energy
The point when the marble was moving the fastest!
What is mechanical advantage?
The ability to reduce the effort needed to move an object
An elevator lifts up a distance of 55 meters with a force of 1300 newtons. What amount of work is done?
71,500 Joules of work
Momentum is a property of mass that connects to which of Newton's three laws?
Newton's first law!
Motion stays in motion
What is the metric unit of mass?
Kilogram or gram
(Kg or g)