a car of mass 800kg of traveling with a velocity of 20m/s when brakes are applied it stops after traveling a distance of 8m find retardation
Answers
Answered by
1
a mass kg 800kg so let start 0 mpersevond so divide by 800 and 8m
Answered by
0
mass : 800 kg
initial velocity: u: 20 m/s
final velocity: v:0 m/s
distance:s:9m
acceleration:a:?
we know that,
v^2= u^2 +2as
=> v^2 - u^2= 2as
=>(v^2-u^2) / 2s = a
=>(0^2-20^2) / 2*8 = a
=>(0-400) / 16=a
=> -400/16= a
=> -25=a
=>-a =25
therefore, -a = retardation= 25m/s^2
initial velocity: u: 20 m/s
final velocity: v:0 m/s
distance:s:9m
acceleration:a:?
we know that,
v^2= u^2 +2as
=> v^2 - u^2= 2as
=>(v^2-u^2) / 2s = a
=>(0^2-20^2) / 2*8 = a
=>(0-400) / 16=a
=> -400/16= a
=> -25=a
=>-a =25
therefore, -a = retardation= 25m/s^2
Tehnaz:
your distance is wrong please check
Similar questions