Question

On an aircraft carrier, a jet can be catapulted from 0 to 140 mi/h in 1.95 s . If the average force exerted by the catapult is 9.15Ã10^5 N , what is the mass of the jet?

Answer 1

Answer:

Mass of the jet, m = 28511.5 kg

Explanation:

It is given that,

Initial velocity if the jet, u = 0

Final velocity of the jet, v = 140 mi/h = 62.58 m/s

Time, t = 1.95 s

Average force, $F=9.15\times 10^5\ N$

We need to find the mass of the jet. According to second law of motion as :

F = m × a

$F=m\times \dfrac{v-u}{t}$

$m=\dfrac{F.t}{v-u}$

$m=\dfrac{9.15\times 10^5\ N\times 1.95\ s}{62.58\ m/s-0}$

$m=28511.5\ kg$

So, the mass of the jet is 28511.5 kg. Hence, this is the required solution.