Answer :
The average momentum of the car moving due east in 10 seconds is
12 x 10⁴ kgm/s.
the mass of the car, m = 2000kg
distance covered by a car in each direction, s = 600m
time taken by the car, t = 10 second
The velocity of the car = ds/dt
velocity = 600/10
velocity = 60m/s
momentum of the car is calculated as :
P = mv
where
P = momentum of the body
m = the mass of car
v = the velocity of car
P = 2000 x 60
P = 120000 kgm/s
P = 12 x 10⁴ kgm/s
The average momentum of the car moving due east in 10 seconds is
12 x 10⁴ kgm/s.
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