measurements,density, acceleration

density of water

1 g/mL (or 1 g/cm³)

calculating the density of a liquid

1)weigh it 2)Use a measuring cylinder to measure its volume 3)perform calculations`

difference between displacement and distance travelled

1.The distance travelled by a moving body is the actual length of the path covered by the body irrespective of direction. ... 1.The displacement of a body is the shortest distance between the initial and final position of the body. 2.Displacement is a vector quantity. 3.Displacement may be positive,negative or zero

frequency of a ticker timer

50 Hz so time between each one is 0.02 seconds

ticker timer

Device used to show movement in science laboratories. It places dots on paper at a rate of 50 dots per second (50 Hz).

speed

Distance travelled per unit time

Force equation

F=ma

difference between speed and velocity

Velocity has direction and speed does not

Acceleration equation

a=vf-vi/t

calculating the density of a regular solid

calculate volume and mass and do p=m/v

v=

d/t

velocity equation

displacement/time (d/t)

speed=

distance/time

how to calculate acceleration

final velocity-initial velocity/time

how to calculate distance travelled on a speed-time graph

find the area under the line

density =

m/v

Weight equation

mass x gravity (w=mg)

Density of an Irregularly Shaped Object

put 100cm3 of water in a measuring cylinder put the solid in its volume is the amount of water it has displaced d=m/v so you divide the mass by volume

What is acceleration?

rate of change of velocity

Speed-time graph

shows the speed of an object on the y-axis and time on the x-axis