Everything! Flashcards
How do you find the distance?
s = v x t
How do you find the average speed?
v = s / t
How do you convert speed in km/h to m/s?
Divide 3.6
How do you convert speed in m/s to km/h?
x 3.6
How do you calculate acceleration?
a = v-u/t
How do you calculate the final velocity?
v = u + at OR v(squared) = u(squared) + 2as
How do you find the displacement?
s = ut + 1/2at(squared)
What is the symbol for displacement?
s
How do calculate the force?
F = ma
What is the acceleration due to gravity?
g = 9.8m/s(squared)
How do you calculate the weight force?
W = mg
What is force measured in?
Newtons (N)
What is mass measured in?
kg
What is acceleration measures in?
m/s(squared) or m/s/s or ms(little -2)
What does v stand for?
Final velocity or average speed
How do you calculate work done?
W = F x d
What is work?
The measure of the amount of energy used in moving an object.
What is work measured in?
Joules (J)
What is power?
Power is the rate that the work is done, or how fast the energy is used.
What is power measured in?
Watts (W)
What is the symbol for kinetic energy?
E(small k)
What is the equation to find the kinetic energy?
E(small k) = 1/2mv^2
What is the symbol for gravitational potential energy?
E(small p)
How do you calculate the gravitational potential energy?
E(small p) = mgh
How do you calculate the Energy Efficiency?
Efficiency = useful energy / total energy x 100%
What is the formula for power?
power = work done / time
What is Newton’s First Law?
An object will remain at rest unless acted on by an unbalanced force.
What is Newton’s second law?
Acceleration is produced when force is applied to a mass.
What is Newton’s Third Law?
For every action there is an equal and opposite reaction.
