40. A rocket blasts off from rest and attains a speed of 45 m/s in 15 s. An astronaut has a mass of 57 kg. What is the astronaut’s apparent weight during takeoff?

 

Apparent Weight is how hard astronaut pushes against seat, which is the Normal force

 

 

So we need the acceleration of the astronaut.

 

Since initial velocity is zero

 

 

 

 

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This page last updated on January 11, 2020