Question

You are stranded in space away from your spaceship and you are at rest. Fortunately, you have a propulsion unit that provides a constant force F and you switch it on. F is the only force that acts on your body. After 3 seconds, you have moved 2.25 m. If your mass is 68 kg, what is the magnitude of F

Answer 1

Answer: 34 N

Step-by-step explanation:

Given

The body moved 2.25 m in 3 sec with the help of propulsion force.

Mass of body m=68 kg

Using the equation of motion

`s=ut+(1)/(2)at^2\\\\2.25=0+(1)/(2)a\cdot 3^2\\\\a=0.5\ m/s^2`

Force is given by the product of mass and acceleration

`F=m* a\\F=68* 0.5\\F=34\ N`