Which of the following answers is closest to the weight (on the Earth's surface) of a woman whose mass is 50kg?

(A) 5N. (B) 50lb. (C) 50N. (D) 500N.



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Which of the following answers is closest to the weight (on the Earth's surface) of a woman whose mass is 50kg?

(A) 5N. --- No.
She weighs lots more than that.
Multiply by g, don't divide by it: W=mg.

Try again.
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Which of the following answers is closest to the weight (on the Earth's surface) of a woman whose mass is 50kg?

(B) 50lb. --- No.
That's the wrong unit and
she weighs much more than that anyway.

Try again.
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Which of the following answers is closest to the weight (on the Earth's surface) of a woman whose mass is 50kg?

(C) 50N. --- No.

Don't forget to multiply by 10 m/s: W=mg

Try again.
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Which of the following answers is closest to the weight (on the Earth's surface) of a woman whose mass is 50kg?

(D) 500N. --- Correct!
W=mg=(50kg)(10m/s)=500N.
That wasn't too difficult after all, was it?

Check the other answers.
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