Question

Since astronauts in orbit are apparently weightless, a clever method of measuring their masses is needed to monitor their mass gains or losses to adjust diets. One way to do this is to exert a known force on an astronaut and measure the acceleration produced. Suppose a net external force of 49.0 N is exerted and the astronaut's acceleration is measured to be 0.780 m/s2. Calculate her mass in kilograms.

Answer 1

Answer:62.82 kg

Explanation:

Given

Net External force(F)=49 N

Astronaut acceleration (a) measured to be $0.78 m/s^2$

According Newton's second law of motion we get

F=ma

$49=m\times 0.78$

$m=\frac{49}{0.78}$

m=62.82 kg