"A car moving at 40 km/h is to be stopped by applying brakes in the next 4.0 m. If the car weighs 2000 kg, what average force must be applied on it?"
Added by Chris L.
Step 1
The formula for kinetic energy is: Kinetic Energy = (1/2) * mass * velocity^2 Given that the mass of the car is 2000 kg and the velocity is 40 km/h, we need to convert the velocity to m/s: 40 km/h = 40 * (1000 m/3600 s) = 11.11 m/s Now we can calculate the Show more…
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