solve v^2=u^2 +2as when
v=-30
u=20
a=10
and s is unknown
To solve for s, we can plug in the given values of v, u, and a into the equation and solve for s:
v^2 = u^2 + 2as
(-30)^2 = (20)^2 + 2(10)(s)
900 = 400 + 20s
Subtracting 400 from both sides:
900 - 400 = 20s
500 = 20s
Dividing both sides by 20:
s = 500/20
s = 25
Therefore, when v = -30, u = 20, a = 10, and s = 25, the equation v^2 = u^2 + 2as holds true.