the driver of a three wheeler moving with a speed of 36 km/h bring his vehicle to rest in 4 seconds just in time to save the child . what is the average retarding force on the vehicle . the mass of the three wheeler is 250 kg and the mass of the driver 50 kg
Answers
Answered by
1
Answer:
-750N
Explanation:
initial speed is 36km/hr = 10m/sec
t =4sec
m of vehicle +driver m(d +v)=300kg.
F =ma
=m(d+v) . v final-v initial /t
=300.(0-10)/4
=300 . -10/4
= -750N
Here -ve sign describes that it is a retarding force
Similar questions