Look at the divisions between 2 and 4. What level of precision does the stopwatch have based on the division marked on its face ?

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

the part of the wave he is travelling on is the crest

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.