Question

A cycle together with its rider weighs 100 kg .how much work is needed to set it moving at 3 meter per second.

Answer 1

Answer is in the picture...you can see it..I am not sure about my answer

Answer 2

Work Done will be 450 J

Explanation:

The energy required is the kinetic energy of the cycle together with its rider

Given data :

Mass of Cycle with weight = 100 kg

Velocity, v = 300 $ms^-^1$

Kinetic Energy is given by the formula  

Putting the given values in the formula, we have

Kinetic Energy = $\frac {1}{2} m v^2$

= $\frac {1}{2} \times 100 \times 3^2$

= 450 J