Physics Flashcards
What is the formula to calculate speed?
Distance/time
What is the formula to calculate acceleration?
Change in velocity/time taken
What is the formula to calculate force (in terms of accel.)?
Mass x acceleration
What is the formula to calculate moment?
Force x distance from pivot
What does it mean when an object is in equilibrium?
The forces on it are balanced
The turning effect of the forces are balanced too
State Hooke’s law.
The extension of a spring is proportional to the load applied to it, given that the limit of proportionality isn’t exceeded.
What is the formula to calculate pressure?
Force/area
What is the formula to calculate efficiency of energy?
(Useful energy output/energy input) x 100%
What is the formula to calculate gravitational potential energy?
Weight x height
What is the formula to calculate kinetic energy?
0.5 x mass x speed^2
Categorize the following into renewable or non-renewable energy types:
a) Wind
b) Wave
c) Fossil fuels
d) Biomass fuels
e) Nuclear fuels
f) Water power
g) Geothermal energy
a) Renewable
b) Renewable
c) Non-renewable
d) Non-renewable
e) Non-renewable
f) Renewable
g) Renewable
What is the formula to calculate work done?
Force x distance moved
What is the formula to calculate power?
Work done (energy transferred) / time taken
Fill in the blank:
a) 1 Joule = 1 _________
b) Watt = 1 __________
a) N m (Newton meter)
b) J/s (Joule per second)
Give the change in matter for the following:
a) Freezing
b) Melting
c) Evaporation
d) Condensation
e) Sublimation
a) Liquid to solid
b) Solid to liquid
c) Liquid to gas
d) Gas to liquid
e) Solid to gas
