Question

Calculate the kinetic energy in joules of a 1,500 kg car that is moving at a speed of 42 km/h

Answer 1

Data:
KE (Kinetic Energy) = ? (Joule)
m (mass) = 1500 Kg
v (speed) = 42 Km/h
converting to m/s (42 / 3.6), we have: v (speed) = 11.6 m/s

Formula:

`K_(E) = (1)/(2) m*v^2`

Solving:

`K_(E) = (1)/(2) m*v^2`

`K_(E) = (1)/(2) *1500*(11.6)^2`

`K_(E) = (1)/(2) *1500*134.56`

`K_(E) = (201840)/(2)`

`\boxed{\boxed{K_(E) = 100920\:Joule}}\end{array}}\qquad\quad\checkmark`