Question

One of the world's fastest helicopters, the Westland Lynx, has a top speed of
4.00x 10^2 km/h. If its kinetic energy at this speed is 2.10 x 10^7J what is the helicopter’s mass?

Answer 1

It’s mass would be 262.5kg

Answer 2

The mass of the helicopter is 3402 kg.

What is kinetic energy?

Kinetic energy is the energy possessed by a body as a result of its motion.

The kinetic energy of a body depends on its mass and velocity as shown below:

$Kinetic\:energy = \frac{1}{2}mass*velocity$

$mass = \frac{2KE}{{velocity}^{2} }$

velocity = 4.00x 10^2 km/h = 111.11 m/s

kinetic energy = 2.10 x 10^7J

$mass = \frac{2 \times 2.1 \times {10}^{7} }{{111.11}^{2}} = 3402 \: kg$

Therefore, the mass of the helicopter is 3402 kg.

Learn more about kinetic energy at: https://brainly.com/question/25959744

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