Question

R varies inversely as v2 if r=120 when v=1 ,find r when v=10

Answer 1

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➷ r = k/v^2

Substitute the values in:

120 = k/1^2

Multiply both sides by 1^2 to find k

k = 120

Substitute new values in:

r = 120/10^2

Solve:

r = 1.2

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