Physics 11th Grade
posted by Anonymous .
Ninja usually weighs 80 kg. He ate 5 kg of cookies over the Holiday Break: a. What is his weight? and B. How can ninja use physics to lose weight?

Ridiculous question. Over two weeks, someone had to have addition fluids, food, and eliminated wastes.

the total kg would be 85 kg. then multiply by 9.8 to find fg. to lose weight he has to have a downward acceleration ( push downwards on a countertop while standing on the scale).

Lets say that ninja gained those 5kg's of weight over the break. Then he would now weigh 85kg.
Weight is Mass multiplied by gravity.
W=Mg
85 is your mass and 9.8 is gravity on Earth.
85*9.8=833
That is the answer to A. c:
Ninja can loose weight by, as Ali said, pushing downwards on a countertop. He can gain weight by standing on one foot. 
Why does a person sitting in one train think that the other train is at rest, when both the trains are moving on a parallel tracks with the same speed and in the same direction?
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