Question

Please answer!!!!!! whoever answers "correctly"I will mark Brainliest......2. A car moving at 40 km/h is to be stopped by applying brakes in the next 40 min. If the car weighs 2000 kg, what average force must be applied on it ?​

Answer 1

Answer:

Initial velocity 'u' = 40 km/h = 25 m\s

Final Velocity 'v' = 0 m/s

Mass of car 'm' = 2000 Kg

Time 't' = 40 min = 2400 sec

F = ma

F = m [(v-u)/t]

F = 2000 [ (0-25)/2400]

F = (2000)(-25)/ 2400

F = -20.3 N