The resistance force R on a body moving through water is measured for various velocities v.
R(N) 0 420 1850 3600 6720
v(m/s) 0 5 10 15 20
By plotting R against v^2, verify that the relationship is of the form R = C * v^2. Draw the line of best fit and hence:
a) Evaluate the constant C
b) Estimate the resistance force when v = 7.5 m/s
c) Estimate the value of v for which R has the value 2500N