Question

A horse and a dog are running with some speed if the weight of horse is 10times than that of dog. Find ratio of kinetic energy

Answer 1

let speed of horse be x m/s= speed of dog
let the mass of dog be m kg
then mass of horse=10m kg

kinetic energy of dog / kinetic energy of horse
(1/2mv^2) / (1/2mv^2)
m/10m= 1/10
ratio = 1:10

hope it helps u
brainliest answer pls

Answer 2

Kinetic Energy:

Explanation:

• Kinetic energy is energy that is generated by the motion of an object.
• Kinetic energy of an object is equal to the half of an object's mass multiplied by square of velocity.

        $K.E=\frac{1}{2}mv^2$

       where m is the mass of object and v is the velocity of object.

• As in the given problem, it is stated that the dog and the horse are running with same speed, so kinetic energy will depends on mass.
• Here, weight of horse is 10 times the weight of dog.

         $\frac{K.E_h_o_r_s_e}{K.E_d_o_g} =\frac{1/2m_h_o_r_s_e\times v_h_o_r_s_e^2}{1/2m_d_o_g\times v_d_o_g^2}$

         $\frac{K.E_h_o_r_s_e}{K.E_d_o_g} =\frac{\textrm{mass of horse}}{\textrm{mass of dog}}$$\frac{K.E_h_o_r_s_e}{K.E_d_o_g} =\frac{\textrm{10}}{\textrm1}}$  

  So, ratio of kinetic energy of horse and dog is 10:1