Ask a New Question

The launching speed of a certain projectile is 6.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.

1 answer

Eq1: Xo = Vo*Cos A = Speed at max h.
Vo = 6.8Xo.

In Eq1, replace Vo with 6.8Xo:
Xo = 6.8Xo*Cos A.
Divide by 6.8Xo:
Cos A = 1/6.8 = 0.14706
A = 81.5 Degrees.

Ask a New Question or answer this question.

Similar Questions

If a projectile has a launching angle of 52 degrees about the horizontal and an initial speed of 18 m/s, what is the highest
1. 1 answer
A rocket fires a projectile at a speed of 0.95c (relative to the rocket) while traveling past the Earth. An earthbound scientist
1. 1 answer
A projectile is fired at an upward angle of 60 degrees with a speed of 100m/s. It lands on a plateau 150m higher. What is the
1. 2 answers
The highest barrier that a projectile can clear is 14.5 m, when the projectile is launched at an angle of 31.0 ° above the
1. 1 answer

more similar questions