an object's change in position relative to a reference point
Motion
200
a Steering Wheel is an example of...
Wheel and Axle
200
All moving objects have_________.
Momentum
200
Newton's second law relates mass, force, and __________.
acceleration
200
Velocity=
What is displacement/time with direction
300
Velocity can best be described as________.
the speed of an object in a particular direction.
300
Name all the simple machines in the lever family.
Simple lever, pulley, and wheel and axle.
300
This is the speed of an object in a particular direction.
Velocity.
300
What law states "for every action there is an equal but apposite reaction"?
Newton's third law.
300
Work= ?/? and it is measured in _______.
force/distance (F/d); joules
400
What are the units of measure for acceleration?
m/s^2
400
Name two simple machine families.
The inclined plane family, and the lever family.
400
Gravitational force decreases as _______ increases.
distance
400
Newton's Second law can be used to derive the equation for ________.
Force
400
Efficiency= ?/work input
useful work input
500
A runner takes part in a 1000 m race, he runs the first 132 m in 18 seconds what is his velocity?
7.3 m/s
500
Name all the simple machines in a bicycle
Screws are used to hold the pieces together. The wheel of a bicycle is a wheel and axle. The pedals are also examples of this simple machine. The pedals are attached to a lever that turns a pulley. The gear shifts and brake handles are levers.
500
The force acting on mass is_______.
Gravity
500
If you slide a book across a rough surface, such as carpet, the book will soon come to rest. This is an example of__________.
Friction
500
?= V final- V initial/time and the SI unit is ___.