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3 years ago

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1 answer:

hammer [34]3 years ago

4 0

Answer:

(a) J = 10560 kg-m/s (b) 251.42 N

Explanation:

Given that,

Mass, m = 4400 kg

Initial speed, u = 5.2 m/s

Final speed, v = 7.6 m/s

Time, t = 42 s

(a) Let J be the impulse exerted on the vehicle. Impuse is equal to the change in momentum such as :

J = m(v-u)

J = 4400 (7.6-5.2)

J = 10560 kg-m/s

(b) Impulse = Force × t

$F=\dfrac{J}{t}\\\\F=\dfrac{10560}{42}\\F=251.42\ N$

Hence, this is the required solution.

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