Question

any object moving with a speed of 45m/s has a kinetic energy of 1800J. what is the mass of the object​

Answer 1

Answer:

The mass of the object is 1.7 kg

Explanation: Kinetic Energy is a form of energy which is experienced by a body in motion.

let the mass of the body be m kg.

velocity of the body is, v = 45 m/s

Kinetic Energy of body is, KE = 1800 J

we know that KE=$\frac{1}{2} mv^{2}$

               so, $1800=\frac{1}{2} m *45^{2}$

                   $m=\frac{3600}{45*45}$

                   m= 1.7 kg