Question

A car travelling at 10 m/s has 75 kJ of KE. Calculate the car’s mass.

Will give brainliest

Answer 1

Answer:

$k.e = \frac{1}{2} MV {}^{2} \\ 75 = \frac{1}{2} m10 {}^{2} \\ \frac{75}{100} = \frac{1}{2} m \\ \\ 0.75 \times 2 =m \\ m = 1.5kg$

the mass of car is 1.5kg