Question

Superman can fly at speeds almost equal to $2.6\times {10}^7$ m/s. A supersonic jet on the planet Krypton can fly at a maximum speed of 130000 m/s. Choose the correct option(s):

• A. The jet flies 2000 times faster than Superman
• B. Superman flies 200 times faster than the jet
• C. Superman flies 2000 times faster than the jet
• D. The jet flies 200 times faster than Superman

Answer 1

The correct option is B Superman flies 200 times faster than the jet

$\text{Given:}\text{Speed of Superman}=2.6\times {10}^{7}m/s=26000000m/s\text{Speed of the jet}=130000m/s\frac{\text{Superman's speed}}{\text{Speed of the jet}}=\frac{26000000}{130000}=200\text{Hence, Superman flies 200 times faster than the jet.}$

[Alternatively,
$\frac{\text{Superman's speed}}{\text{Speed of supersonic jet}}=\frac{2.6\times {10}^7}{1.3\times {10}^5}=200$]