Aprojectile is launched diagonally into the air and has a hang time of 24.5 seconds. approximately how much time is required for the project to reach its apex?

Explanation:

Diagonal Launch

It's referred to as a situation where an object is thrown in free air forming an angle with the horizontal. The object then describes a known path called a parabola, where there are x and y components of the speed, displacement, and acceleration.

The object will eventually reach its maximum height (apex) and then it will return to the height from which it was launched. The equation for the height at any time t is

Where vo is the magnitude of the initial velocity, is the angle, t is the time and g is the acceleration of gravity

The maximum height the object can reach can be computed as

There are two times where the value of y is when t=0 (at launching time) and when it goes back to the same level. We need to find that time t by making

Removing and dividing by t (t different of zero)

Then we find the total flight as

We can easily note the total time (hang time) is twice the maximum (apex) time, so the required time is

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it