General Knowledge - Physics - Discussion

How come the time is 20 Seconds?

BOMB WILL FALL UNDER THE EFFECT OF EARTH GRAVITY(9.8M/SEC SQUIRE) AND AEROPLANE WILL MOVE IN HORIZONTAL DIRECTION WITH ITS HORIZONTAL SPEED V(V=u+a*t).

Here the value of V will be 1600 KmpH(=166.66m/s) because its initial speed(u) is zero. The taken by bomb to reach on earth will be calculated by formula (S=ut+0.5at*t); here the S is the height and a is equal to earth gravity(g=9.8) and u=0, so formula will be H=0.5gt*t and thus value of t( time taken by bomb to reach on earth will be) will be 20 sec.

Now the bomb will move in the horizontal direction in 20 sec and with the speed( same speed of aeroplane) of 1600(=166.66m/s) and it will move in horizontal direction (distance = speed x time) by 166.66x20 sec.

SOLUTION:

Velocity = 600km/hr=600*1000/3600m/s.
= 166.66m/s.

FORMULA:

Ht = 0.5*a*t*t.
Ht = 0.5*9.8*2*2.
Ht = 19.6+0.4.
H t= 20 seconds.

R = V*t.
R = 166.66*20 SEC.

R = 333.2km.
R = 333.2/1000.
R = 3.33km.

Therefore R is 3.33km.

When a body is projected into space and no longer propelled by fuel and other external forces except gravity it's motion is called a projectile motion.

1960/600 = 33.2666666666667.

Why is initial velocity 0? Why not 600 as plane is moving at 600?

Why is initial velocity not 600?

When body travels under the effect of gravity and when initial velocity g are not at 180 to each other i.e opposite then projectile motion in which the body follows a curved path.

Mass and shape of bomb also matters. Is it true?

The required distance from A to B is equal to range AB?

Please clarify it.