density,speed and acceleration Flashcards
1
Q
what is density?
A
Density is mass over volume
2
Q
name 3 objects more dens then water
A
wood people and plastic
3
Q
what is flotation/
why does an object float on water?
A
An object floats on water because its density is less then the density of the liquid.
4
Q
Define speed/
what is speed
A
the speed of an object is the distance travelled per unit time
5
Q
what is speed
A
speed is distance over time
6
Q
what is velocity
A
velocity is the speed of an object in a particular direction
7
Q
what is acceleration
A
acceleration is the change in velocity per unit time
8
Q
what is acceleration
A
acceleration is change in velocity over time taken
