Question

whoever will answer this correct, will be marked brainliest
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Answer 1

Answer:

Q15. a

Q16. b

Explanation:

Hope it helps you. I tried my best.

Answer 2

Question Number 15 solution:

We know that, K.E. = 1/2 mv^2

As,

mass = m =30 quintals = 3000kg

and, velocity = v = 36km/hr = 10m/s

Putting values in equation 1:

K.E.= 1/2 (3000)(10)

K.E. = 15000J

The answer will be NONE OF THE ABOVE as 15000 is not an option.

Question Number 16 Solution:

We first need to calculate the individual potential energies.

As,

P.E1 = mgh

As mass is not given,

P.E1 = m(10)(35)

P.E1= 350m

Now,

P.E2 = mgh

Here height = 350m

So, P.E2 = m(10)(350)

P.E2 = 3500m

Taking ratio of both answers;

P.E.1/P.E.2 = (350m)/(3500)m

P.E.1/P.E.2 = 1/10 = 1:10

A is the correct answer.