For a given initial projectile speed, you observe that the projectile has a certain range R at a launch angle of a = 30. For what other launch angle will the projectile have the same range?

The other angle is 30 degrees.

Explanation:

The range of projectile is given by :

Here,

u is the speed of launch of projectile

Here,

We need to find the other launch angle when the projectile have the same range, such that,

So, the other angle is 30 degrees. Hence, this is the required solution.

he kicked it 10 feet straight up into the air? i think this works.

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas