Physics Measurements

Question 0

Derived quantities are:

Answer 0

Any secondary quantity derived from a combination of one or more of three basic quantities , such as mass, length and time.

Question 1

Base quantities are:

Answer 1

Length, mass and time.

Question 2

Velocity

Answer 2

V=d/t. Velocity equals distance over time.

Question 3

Average velocity

Answer 3

(With a line over the “v.”) V=(initial velocity + final velocity)/2

Question 4

Acceleration

Answer 4

a= (final velocity - initial velocity)/time

Question 5

Force

Answer 5

F=ma. Force equals mass times acceleration.

Question 6

Weight

Answer 6

Wt=mg. Weight equals mass times gravity. On Earth, gravity =9.8 m/s^2

Question 7

Momentum

Answer 7

P = mv. Momentum equals mass times velocity.

Question 8

Work

Answer 8

W = Fd. Work equals force times distance.

Question 9

Power

Answer 9

P = Work/t = Fd/t.

Power equals work over time.

Question 10

Kinetic energy

Answer 10

KE = 1/2(mv^2)

Kinetic energy equals half of mass times velocity squared.

Question 11

Potential energy

Answer 11

PE = mgh.

Potential energy equals mass times gravity times height.