2) A car travelling at 35.0 km / hr speeds up to 45 km / hr in a time of 5.00 s. The same car later speeds up from 65 km / hr to 75 km/hr in
a time of 5.00 sec.
a. Calculate the magnitude of the constant acceleration for each of
these intervals.
b. Determine the distance traveled by the car during each of these
time intervals.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

hypothesising or postulating