a motor car is moving with a velocity of 108 km/h and it takes 4s stop after the brakes are applied. find the force exerted by the brakes on the motor car it if it's mass along with the passenger is 1000 kg
Answers
Answered by
17
given
u=108km/h =108×5/18 =30m/sec
v=0 (brakes applied)
t=4s
so first :a=v-u/t
0-30/4
-30/4 = -7.5m/sec^2
then second;:F=m×a
F=1000×-7.5=-7500N
u=108km/h =108×5/18 =30m/sec
v=0 (brakes applied)
t=4s
so first :a=v-u/t
0-30/4
-30/4 = -7.5m/sec^2
then second;:F=m×a
F=1000×-7.5=-7500N
Answered by
9
hey ur ans is..
u= 108km = 30m/s
v=0m/s
t=4sec
mass =1000kg
F= m(v-u/t)
= 1000*(0-30/4)
=1000*(-30/4)
=500*-15
= -7500N
u= 108km = 30m/s
v=0m/s
t=4sec
mass =1000kg
F= m(v-u/t)
= 1000*(0-30/4)
=1000*(-30/4)
=500*-15
= -7500N
Similar questions