General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 79)
79.
An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is
Discussion:
36 comments Page 1 of 4.
Matiur Rahamam said:
7 years ago
Convert velocity in horizontal direction, Ux into m/s:
Ux = 600x1000/3600 = 500/3 m/s.
Velocity of the bomb during the flight is constant due to inertia. Therefore,
Initial velocity in vertical direction, Uy = 0,
Height = 1960 m.
Step 2: Find time 't' using the equation [s = ut + 1/2at^2]
Replace distance 's' by height 'h' and acceleration 'a' by gravity 'g'
h = 1/2gt^2
t = √(2h)/g = √(2x 1960/9.8) = 20 sec.
Step 3: Find the distance traversed by the bomb in horizontal direction:
Distance AB = vx t = 500/3 x 20 = 10/3 x 10^3m = 3.333 km.
Ux = 600x1000/3600 = 500/3 m/s.
Velocity of the bomb during the flight is constant due to inertia. Therefore,
Initial velocity in vertical direction, Uy = 0,
Height = 1960 m.
Step 2: Find time 't' using the equation [s = ut + 1/2at^2]
Replace distance 's' by height 'h' and acceleration 'a' by gravity 'g'
h = 1/2gt^2
t = √(2h)/g = √(2x 1960/9.8) = 20 sec.
Step 3: Find the distance traversed by the bomb in horizontal direction:
Distance AB = vx t = 500/3 x 20 = 10/3 x 10^3m = 3.333 km.
(6)
Nas said:
3 years ago
@Tamil Nayagam,
1960/600 = 3.266.
We can take 3.3.
1960/600 = 3.266.
We can take 3.3.
(1)
Diptikanta sahu said:
8 years ago
What is a projectile of motion?
(1)
Bave said:
8 years ago
First. We will change m/s.
Then 600 * 1000/3600 = 166.666m/s.
Next. H=1/2at^2.so 1960=1/2*9.8*t^2.
Then t=20s.
Finally, Use H=ut equation.then H=166.66 * 20.
So 3333.333metres.
So answer 3.33km.
Then 600 * 1000/3600 = 166.666m/s.
Next. H=1/2at^2.so 1960=1/2*9.8*t^2.
Then t=20s.
Finally, Use H=ut equation.then H=166.66 * 20.
So 3333.333metres.
So answer 3.33km.
(1)
Ambisa mekonen said:
9 years ago
The required distance from A to B is equal to range AB?
Please clarify it.
Please clarify it.
Pankaj mane said:
10 years ago
Mass and shape of bomb also matters. Is it true?
Latha said:
9 years ago
@Tms.
Projectile motion means a particle moves along curved path due to gravity and formula is 1/2gt^2.
Projectile motion means a particle moves along curved path due to gravity and formula is 1/2gt^2.
Latha said:
9 years ago
@S Ramkiran.
Nice explanation, thank you.
Nice explanation, thank you.
JYOTIRNAV said:
9 years ago
Everybody knows oil prices increase day to day because there is a big problem in our society. In our daily life, it is the very important thing. I also think it is time to look at the green resource of energy rather than the depending upon petroleum products. In this way, our country does not make the smart country.
Shanaya said:
9 years ago
How to find out the angle that bomb is making with vertical?
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