I will give the brainiest for the one who answers it first and CORRECTLY! (pls don't just randomly put any answer just to get points!) Select the correct answers. Which TWO statements are true about generators? . They covert motion energy to electric energy
. They have a pair of magnets and a rotating metal coil
. They're powered by fossil fuels
.They convert electric energy to motion energy
.They use the relative motion of magnet and coil of wire​

The true statements about generators would be :

They convert motion energy to electric energy

           They use the relative motion of a magnet and a coil of wire.

Explanation:

Generators use the energy of the rotating coil in relative motion with magnets to induce a current within the wire. Generators are devices that convert energy into a voltage by the relative motion of the magnet and a coil that changes flux.

the velocity you are looking for is made up of two parts: horizontally velocity, vh, and its vertical velocity, vv. the actual velocity of the ball will be these two parts added together, and because velocity is a vector then they will need to be added vectorially.  

neglecting air resistance etc etc.,  

the horizontal velocity component will be constant (because there is no accelerating force in the horizontal direction.  

vh = 8 ms-1  

the vertical velocity component has an accelerating force: 'g'.  

using v = u +at where a = g = 9.81 ms-2.  

the vertical component of velocity, vv = 0 + gt = vv =9.81 x 2  

vv = 19.62 ms-1 . the zero appears because the virtical component of velocity at time t=0 is zero. remember, the ball was thrown horizontally.  

how fast it will be moving (it actual path (being a parabola )) will be the vector sum of these two.  

adding vectorally gives: -  

v = sqr root (8^2 + 19.62^2) = sqr root(64+384.9) = 21.18 or 21.2 ms-1