Science of Apps! - Part 2- Angry Birds

Classical Mechanics Level 3

Another game which was incredibly popular was Angry Birds. The game follows a group of birds on a quest to retrieve their eggs from the green pigs. The game itself has a simple gameplay. All the player has to do is drag the sling shot, release the bird and destroy the pigs.

There are many different types of birds with different superpowers. Now, take the following scenario. I have a bomb bird ( a bird which explodes) and I have to kill two pigs located $245$ and $255$ meters away from the slingshot. To kill the two pigs, the bird must land right in between them, considering the bird does not bounce. If the slingshot is on level ground, and the bird must be shot at an angle of $\frac{\pi}{12}$ from the ground, what is the velocity, in m/s , required to complete the task?

Take $g=9.8 m/s^{2}$

This problem is part of the Science of Apps! series

The answer is 70.

1 solution

Shaan Vaidya
May 23, 2014

I feel the problem has been given an exceptionally high rating, the staff should look into it.

Anyway, the problem can be solved as follows:

The expression for the range of a projectile thrown from level ground at an angle $\theta$ to the horizontal is:

$R$ $=$ $\frac{u^2 sin (2\theta)}{g}$ .

Also, for the projectile to fall exactly between the pigs, $R$ $=$ $\frac{245+255}{2}$ $=$ $250m$ .

Plug in the given values to get $u$ $=$ $\boxed{70 m/s}$

I agree the rating should be around level 2

Mardokay Mosazghi - 7 years ago

I too agree... This is high school physics....

Satyam Bhardwaj - 7 years ago

I had set it as a Level 2 problem.

Nanayaranaraknas Vahdam - 7 years ago

True..this is a level 1 prob

Shivam Singh - 7 years ago

Its just a high school projectile problem applied to angry birds. And the answer is exactly 70 m/s.

Anfin Joshy - 7 years ago

its a high school projectile problem

padma vathi - 7 years ago

easily done by projectile motion

Varun Vijay - 7 years ago

I guess u didn't consider the value after decimal.The exact answer for the problem is 70.7m/s

SupRiya Sharma - 7 years ago

hey! I thought in between means 245<R<255

Mayank Holmes - 7 years ago

but g=9.8, so it is confusing.

Debsubhra Roy - 7 years ago

i got Exactly 70.

Bob Yang - 5 years, 10 months ago

Since its not stated in the question that take g=9.8 so we can just take it 10! Hope your doubt is cleared?

SupRiya Sharma - 7 years ago

Science of Apps! - Part 2- Angry Birds

The answer is 70.

1 solution

0 pending reports