Science Midterms

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What is the formula for speed?

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Physical Science Midterm

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1

What is the formula for speed?

Speed = distance/time

S=d/t

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2

What is the formula for velocity?

Velocity = displacement/time

V=d/t

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3

What is the formula for acceleration?

Acceleration = (vf-vi)/time

A = (vf-vi)/t

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4

What is the formula for force?

Force = mass x accelerations

F=ma

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5

What is the formula for weight?

Weight = mass x gravity

W=mg

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6

What is the formula for work?

Work = force x distance

W=fd

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7

What is the formula for power?

Power = work/time

P = w/t

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8

What is the formula for energy?

Energy = work

E=w

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9

What is the formula for kinetic energy?

Kinetic energy = ½ mass x velocity²

KE = ½mv²

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10

What is the formula for potential energy?

Potential energy = mass x gravity x height

PE = mgh

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11

How many centimeters are in one inch?

2.54 cm

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12

How many inches are in one meter?

39.37 inches

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13

How many feet are in one meter?

3.28 feet

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14

How many pounds are in one kilogram?

2.2 lbs

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15

How many feet are in one yard?

3 feet

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16

How many inches are in one foot?

12 in

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17

How many feet are in one mile?

5280 ft

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18

How many seconds are in one hour?

3600 s

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19

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.

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20

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.

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21

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.

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