A student claims to have a weight is 45 kg What is the problem with the claim?

Most people way more than 45 kg

most people weigh less than 45 kg

kg is a unit of mass in the SI system so she has confused mass and weight

the student has confused kg with newtons and must weigh 45 N

kg is a unit of mass in the SI system so she has confused mass and weight

Explanation:

Kilograms are the SI unit for mass, and Newtons are the SI unit of weight.  Therefore, the student needs to reevaluate their claim by using N instead of Kg.

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