Move it, move it!
What is motion?
the change of an object's position
What are the 2 main types of mechanical energy?
potential and kinetic
What is the formula for distance?
speed X time = distance
An object at rest tends to stay at rest, an object in motion tends to stay in motion with the same direction and speed. What law is this?
Newton's 1st Law of Motion
what is force?
a push or pull applied to an object in order to change its velocity
What is velocity?
speed of a moving object in any given direction
If the blender is ON, what type of energy is it using?
Kinetic
What is known as the original simple machine?
A wedge
Dad slammed on the brakes when a ball bounced out in front of our car. My sister's doll that had been on the backseat ended up on the floor. What law does this most represent?
Newton's first law of motion
What is effort force?
force applied to a simple machine
What is momentum determined by?
Mass, speed or velocity (or direction)
What is the definition of mechanical energy?
ability to make something move
What is a compound machine?
A machine that combines 2 or more simple machines
Every action has an equal and opposite reaction
What is a lever?
any bar that turns on a point
What is a reference point?
A fixed, unmoving object (or location)
the ___________ speed is the speed an object travels during an entire trip
Average speed
Name an example of a lever?
seesaws, brooms, baseball bats, (students could also use other responses)
when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. What law is this?
Newton's 2nd law
What is resistance force?
force that works against the effort
What is distance?
how far an object travels in the amount of space between 2 points
Angela traveled 56 meters in 8 seconds. What was her average speed?
7 m/s
Name an example of a wheel and axle
ferris wheels, doorknobs, screwdrivers, etc (students can use other responses not listed)
Ruth likes to play softball and go bowling. She uses less force to throw a softball than she uses when she rolls a bowling ball. Which of Newton's laws best fits this scenario?
Newton's 2nd law of motion
What are the 3 types of pulleys?
Moveable, fixed pulley and block and tackle