Q.9 A bus is travelling at 54 km/h. The driver applies brakes so that it retards uniformly to stop in 5 s. Find its retardation. Also, find the distance covered by the bus in this duration.
Answers
Answered by
4
Answer:
initial velocity(u)=54 km /h or 54×5/18 m/s
final velocity(v)=0 m/s
time(t)=5 s
using 1st equation of motion,
v=u+at
0=54+5a
5a=-54
a=-54/5
a=-10.8 m/s
retardation= 10.8 m/s
using 2nd equation of motion,
distance(S)=
S=ut+1/2at²
S=54×5+1/2×10.8×5×5
S=270+135 m
S=405m
Step-by-step explanation:
please mark me brainiest answer
Answered by
4
Step-by-step explanation:
check your steps with my steps..
Attachments:
Similar questions