Unit 1-5

Question 1

How to calculate speed?

Answer 1

Speed = Distance/ Time

Question 2

How to calculate Acceleration?

Answer 2

Acceleration= Change in velocity/ Change in time

Question 3

How to calculate Weight?

Answer 3

Weight= Mass x Gravitational field strength

Question 4

How to calculate Density?

Answer 4

Density = Mass/ Volume

Question 5

How to calculate Moment?

Answer 5

Moment of a force = Force × Perpendicular distance from the pivot

Question 6

How to calculate Force?

Answer 6

Force = mass X acceleration

Question 7

How to calculate momentum?

Answer 7

momentum = mass X velocity

Question 8

How to calculate Force using change in momentum?

Answer 8

Force = change in momentum/time

Question 9

How to calculate Power?

Answer 9

Power = work done / time taken

Question 10

How to calculate Voltage?

Answer 10

Voltage = current X resistance

Question 11

How to Calculate Charge?

Answer 11

charge = current X time

Question 12

How to calculate Power using voltage?

Answer 12

Power = voltage X current

Question 13

How to calculate wave speed?

Answer 13

wave speed = frequency X wavelength

Question 14

How to calculate frequency?

Answer 14

frequency = 1 / time period

Question 15

How to calculate the Refractive index?

Answer 15

Refractive index = sin X angle of incidence/sine X angle of refraction,

Question 16

Sin(?) = 1/?

Answer 16

Sin (critical angle) = 1 / refractive index

Question 17

How to calculate density?

Answer 17

Density = mass/volume

Question 18

How to calculate Pressure?

Answer 18

Pressure = Force / Area

Question 19

How to calculate Pressure in a liquid?

Answer 19

Pressure in a liquid = liquid density X height of liquid X gravity