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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

Respuesta :

Answer: 34 N

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

[tex]s=ut+\frac{1}{2}at^2\\\\2.25=0+\frac{1}{2}a\cdot 3^2\\\\a=0.5\ m/s^2[/tex]

Force is given by the product of mass and acceleration

[tex]F=m\times a\\F=68\times 0.5\\F=34\ N[/tex]