Question

A body travel a distance of 168 m in a straight
line in 21 s. with what velocity the body.​

Answer 1

Step-by-step explanation:

(R) = 20 Ω

(I)= 5 A

(t)= 30 s

Now we know that H= I2Rt

use it here = 5×5×20×30

= 15000J=1.5×104J

The heat developed in 30s is 1.5×104Jvlol sjkbsbjd