Respuesta :

09pqr4sT

Answer:

[tex]\boxed{\bold { \Large { \boxed {0.28 \ kg}}}}[/tex]

Explanation:

Use kinetic energy formula

[tex]\sf \displaystyle K.E=\frac{1}{2} mv^2[/tex]

Solve for m

[tex]\displaystyle 125=\frac{1}{2} m \times 30^2[/tex]

[tex]m=0.2777..[/tex]

A man has a kinetic energy of 125J when he runs at 30m/s.  0.2777  is the mass of the man.

What is kinetic energy?

Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles.

Use kinetic energy formula:

Given data:

K.E = 125J

V = 30m/s

K.E = [tex]\frac{1}{2} mv^2[/tex]

Solve for m

125J = [tex]\frac{1}{2} \;m \;{30m/s}^2[/tex]

m = 0.2777

Hence,  0.2777 is the mass of the man.

Learn more about kinetic energy here:

https://brainly.com/question/22174271

#SPJ2

Otras preguntas