Question

what is the change in momentum of a car weighing 1500 kg its speed increases from 36km/h to 72km/h uniformly​

Answer 1

Answer:

Momentum of car at speed 36km/h=10m/s=m×10

=1500×10

=15000kg m/s

Momentom of car at speed 72km/h=20m/s=m×20

=1500×20

Answer 2

Mass of car = 1500 kg

Velocity v1 = 36 km/hr = 10 m/s

Momentum p1 = 1500 x 10 = 15000 kg.m/s Velocity v2 = 72 km/hr= 20 m/s

Momentum p2 = 1500 x 20 = 30000 kg.m/s Change in momentum =p2 -p1 = 30000 – 15000

= 15000 kg.m/s

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