Science Midterms
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21 Terms
What is the formula for speed?
Speed = distance/time
S=d/t
What is the formula for velocity?
Velocity = displacement/time
V=d/t
What is the formula for acceleration?
Acceleration = (vf-vi)/time
A = (vf-vi)/t
What is the formula for force?
Force = mass x accelerations
F=ma
What is the formula for weight?
Weight = mass x gravity
W=mg
What is the formula for work?
Work = force x distance
W=fd
What is the formula for power?
Power = work/time
P = w/t
What is the formula for energy?
Energy = work
E=w
What is the formula for kinetic energy?
Kinetic energy = ½ mass x velocity²
KE = ½mv²
What is the formula for potential energy?
Potential energy = mass x gravity x height
PE = mgh
How many centimeters are in one inch?
2.54 cm
How many inches are in one meter?
39.37 inches
How many feet are in one meter?
3.28 feet
How many pounds are in one kilogram?
2.2 lbs
How many feet are in one yard?
3 feet
How many inches are in one foot?
12 in
How many feet are in one mile?
5280 ft
How many seconds are in one hour?
3600 s
What is Newton’s first law?
The law of Inertia
An object at rest will remain at rest, and an object in motion will remain in motion with a constant net force upon it.
What is Newton’s second law?
The acceleration of an object is directly proportional to the net force acting upon the object and inversely proportional to the object's mass. The direction of the acceleration is the same as the direction of the net force.
What is Newton’s third law?
For every action, there is an equal and opposite reaction. When one object exerts a force on a second object, the second object exerts an equal force in the opposite direction on the first object.