Given that the mass of the car is m = 50 g
The height of the hill is h = 75 cm
A) We have to find the mass of the car in kg.
The mass of car in kg is
[tex]\begin{gathered} m=\frac{50}{1000} \\ =0.05kg \end{gathered}[/tex]
B) The height of the hill is
[tex]\begin{gathered} h=\text{ }\frac{75}{100} \\ =0.75m\text{ } \end{gathered}[/tex]
The acceleration due to gravity is g = 9.8 m/s^2
C) Potential energy will be
[tex]\begin{gathered} U=\text{ mgh} \\ =0.05\times9.8\times0.75 \\ =0.3675\text{ }J \end{gathered}[/tex]
