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Kalahira
The formula to get the Kinetic Energy is KE=1/2mv^2 where m=mass in kilogram and v=velocity of the object. From you given, we substitute it to the variables. This is the solution: KE=1/2mv^2 KE=1/2(55kg)(9.0m/s)^2 KE=1/2(4455) KE=2227.5J or it can be written in scientific notation as 2.2275x10^3J or closest to your choices is 2.2x10^3J.
asuwafohjames

 The kinetic energy of the skier is 2.2×10³ J and the right option is (3) 2.2×10³ J.

To calculate the kinetic energy of the skier, we use the formula below.

Formula:

  • K.E = mv²/2........... Equation 1

Where:

  • K.E = Kinetic energy of the skier
  • m = mass of the skier
  • v = velocity of the skier.

From the question,

Given:

  • m = 55 kg
  • v = 9.0 m/s

Substitute these values into equation 1

  • K.E = 55(9²)/2
  • K.E = 55(81)/2
  • K.E = 2227.5 J
  • K.E = 2.2×10³ J.

Hence,  the kinetic energy of the skier is 2.2×10³ J and the right option is (3) 2.2×10³ J.

Learn more about kinetic energy here: https://brainly.com/question/20658056

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