equations in paper 1 Flashcards
1
Q
how do you calculate distance traveled?
A
distance= average speed x time
2
Q
how do you calculate acceleration?
A
acceleration=
change in velocity / time taken
3
Q
what are the symbols for working out acceleration?
A
(v-u)
a= ——
t
4
Q
how do you calculate force?
A
force= mass x acceleration
5
Q
how do you calculate weight?
A
weight= mass x gravitational field strength
6
Q
what is the gravitational field strength of earth?
A
10
7
Q
how do you calculate momentum?
A
momentum= mass x velocity
8
Q
how do you calculate change in gravitational energy?
A
= mass x gravity x height
9
Q
how do you calculate kinetic energy?
A
0.5 x mass x (speed)’2
10
Q
how do you calculate efficiency?
A
(total energy supplied to the device)
11
Q
what are the two ways of calculating wave speed?
A
= frequency x wavelength
OR
= distance / time
