Question
. What is the weight of a 90kg man standing on Earth, where gearth = 9.82 m/s2?
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A.
80.2 N
B.
884 N
C.
99.8 N
D.
9.2 N
HighLighter PopupUnderline Selected TextGreen Color HighlightOrange Color HighlightYellow Color HighlightBlue Color HighlightPink Color HighlightRemove Color Highlight
A.
80.2 N
B.
884 N
C.
99.8 N
D.
9.2 N
Answers
GPT-4o mini
To calculate the weight of a 90 kg man standing on Earth, you can use the formula:
\[ \text{Weight} = \text{mass} \times \text{gravity} \]
Given:
- Mass (m) = 90 kg
- Acceleration due to gravity (g) = 9.82 m/s²
Substituting the values into the formula:
\[ \text{Weight} = 90 \, \text{kg} \times 9.82 \, \text{m/s}² \]
\[ \text{Weight} = 883.8 \, \text{N} \]
Rounding to one decimal place, the weight is approximately 884 N.
Therefore, the correct answer is:
**B. 884 N**
\[ \text{Weight} = \text{mass} \times \text{gravity} \]
Given:
- Mass (m) = 90 kg
- Acceleration due to gravity (g) = 9.82 m/s²
Substituting the values into the formula:
\[ \text{Weight} = 90 \, \text{kg} \times 9.82 \, \text{m/s}² \]
\[ \text{Weight} = 883.8 \, \text{N} \]
Rounding to one decimal place, the weight is approximately 884 N.
Therefore, the correct answer is:
**B. 884 N**