units and dimensions Flashcards
(24 cards)
What is the SI unit of length?
Meter
What is the SI unit of mass?
Kilogram
What is the SI unit of time?
Second
What is the SI unit of electric current?
Ampere
What is the SI unit of temperature?
Kelvin
What is the SI unit of amount of substance?
Mole
What is the SI unit of luminous intensity?
Candela
What is the formula for calculating density?
Density = Mass / Volume
What is the formula for calculating speed?
Speed = Distance / Time
What is the formula for calculating acceleration?
Acceleration = Change in Velocity / Time Taken
What is the formula for calculating force?
Force = Mass x Acceleration
What is the formula for calculating momentum?
Momentum = Mass x Velocity
What is the formula for calculating work?
Work = Force x Distance
What is the formula for calculating power?
Power = Work / Time
What is the formula for calculating kinetic energy?
Kinetic Energy = 0.5 x Mass x Velocity^2
What is the formula for calculating potential energy?
Potential Energy = Mass x Acceleration Due to Gravity x Height
State Newton’s First Law of Motion.
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an external force.
State Newton’s Second Law of Motion.
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
State Newton’s Third Law of Motion.
For every action, there is an equal and opposite reaction.
What is the formula for calculating gravitational force?
Gravitational Force = (G x Mass1 x Mass2) / Distance^2
What is the SI unit of force?
Newton
What is the SI unit of energy?
Joule
What is the SI unit of power?
Watt
What is the SI unit of pressure?
Pascal
