Question

A mother's age equals the sum of the ages of her five children. If after 12 years the sum of the ages of the children will be twice of the age of thier mother . How old is the mother now ?

Hint :- After 12 years , age of each child will increase by 12 years so total increase in age of 5 children after 5 years will be 12×5 = 60 yrs more .

Answer 1

Answer:

given , m = 110 Kg

g = 9.8 m/s2

as man climbing up a vertical stairway at the rate of 2.0m/s

I.e distance covered in 1 sec=s = 2.0m

So work done will be given as

Let W = mgs

So

P = W/T

P = mgs / t

As t=1 sec

so P=110 * 9.8 * 2=2156 Watt

punu bhabhi ka 1st acc

Step-by-step explanation: