Its the symbol it usually has the first letter of the elements name.<span />
Answer:If an object's speed changes, or if it changes the direction it's moving in,
then there must be forces acting on it. There is no other way for any of
these things to happen.
Once in a while, there may be a group of forces (two or more) acting on
an object, and the group of forces may turn out to be "balanced". When
that happens, the object's speed will remain constant, and ... if the speed
is not zero ... it will continue moving in a straight line. In that case, it's not
possible to tell by looking at it whether there are any forces acting on it
Mass of solid cube = 725g = 0.725kg Length of each side = 6.35cm =0.0635 m As volume = length ×length×length Volume= 0.0635×0.0635×0.0635 =0.1905 m³ ρ = m/V ρ= 0.725/0.1905 = 0.138 kg/m³ Answer
Newton's 2nd law of motion says:
Force = (mass) x (acceleration).
In order to accomplish the task described in the question,
you would need
Force = (20 kilograms) x (the desired rate of acceleration) .
Yes, I do! Vectors have a direction linked to them and scalars don’t.