Question

10 wale numerical ka solution

Answer 1

speed1=15 km h-1 speed2=30km h-1
=15*(5/18) =8.33 m/s
=4.17 m s-1

KE1= 0.5*(4.17)2 *m KE2=0.5*(8.33)2*m

now,
KE1/KE2=(4.17)2/(8.33)2
ANS =17.39/69.39

Answer 2

I hope it will be process..