Answer:
when completing a science experiment it is important to run multiple tests do as to reduce the risk of any outliers of false results
There is no soil in a hole
;)
Objects should be cooled before their mass is determined on a sensitive balance because it could damage the balance. Also, because it would give you wrong reading of the mass. Hot objects would warm the air around it. A warm air would expand and would produce convection as it rises causing to give the object a mass that is less than the actual. Another reason would be it would cause instability in the readings, the mass would fluctuate every now and then due to the convection currents around the object. It is always recommended to weigh the masses of objects that are in room temperature.
Answer:
I found this don't know if its any use or not
Answer:
-10m/s
Explanation:
only the magnitude of the velocity will change due to the change in direction of the car.