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Vesna [10]
3 years ago
8

a car with a mass of 1.2 × 103 kilograms is moving at a speed of 18 meters/second. It is hit by a truck from behind and its spee

d after the collision increases to 20 meters/second. What is the value of impulse?
Chemistry
2 answers:
aalyn [17]3 years ago
6 0

Answer: Value of impulse is 2.4\times 10^3\text{kg m/s}

Explanation: lmpulse is defined as the amount of force acting over a short time interval 't' which is equal to the change in momentum of the body having mass 'm'.

Mathematically,

J=F\times t=m\Delta v

And,

\Delta v=v_2-v_1

Given:

m=1.2\times 10^3kg\\v_1=18m/s\\v_2=20m/s

Putting values in above equation, we get:

J=m(v_2-v_1)=1.2\times 10^3(20-18)\text{ kg m/s}

J=2.4\times 10^3\text{kg m/s}

vodomira [7]3 years ago
4 0
2.4 × 10^{3} kilogram meters/ second 
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