Question

Plz help:)

Answer 1

http://assets.openstudy.com/updates/attachments/4fe2b285e4b06e92b87199ec-maheshmeghwal9-1340256913314-dscn0115.jpg
@ramkrishna sir plz help:)

Answer 2

distance = speed x time

Answer 3

since sound from the tank heard after time 2.1sec, so, distance between gun and tank is

distance= velocity of sound*time taken by sound=340*2.1=714m

Now we know the distance between gun and tank. and we know the time in which bullet reach to tank, so,

velocity of bullet =distance/time=714/0.6=1190m/sec

Answer 4

@ramkrishna Sir, but in my book answer is given as follows: -
distance=510m. & velocity= 850m/s.

Answer 5

In my book there is solution too but I couldn't understand that: -

In the solution, time taken by the sound is given as 2.1-0.6=1.5
& then he calculated the remaining part

But why did the solution took the time taken by the sound as 1.5sec. ?????????

Answer 6

got it.

we have problem in understanding the meaning of question; we have to improve english also.
OR, we don't read the question properly.

2.1 second is the time interval between the gun shot and the burst of the shell's sound heard.

and 0.6 second is the time interval between the gun shot and the burst actually taken place.

So, the time taken by the sound of burst to reach us is 2.1-0.6=1.5sec

Answer 7

k:)
sir thanx a lot
the english was a little bit confusing
so u r right we have to improve our english too haha:)