Question

time
0.01
..A motorcar of mass 1200 kg is moving
along a straight line with a uniform
velocity of 90 km/h. Its velocity is slowed
down to 18 km/h in 4s by an unbalanced
external force. Calculate the acceleration
and change in momentum. Also calcu-
late the magnitude of force required.​

Answer 1

Answer:

acceleration=-18m/s

Force=216N

Step-by-step explanation:

Mass=1200kg

U=90 KM/H

V=18 KM/H

T=4 SEC

ACCELERATION=U-V/T

=18-90/4

=-72/4

=-18M/S

FORCE=M×A

=1200×-18

=216N

Missing you KIMTAEYUNG83

BTS LIVE FOREVER AND EVER