I launch 2 projectiles at the same angle. The first one was launched with a horizontal speed of 10 m/s. The second was launched at a speed of 20 m/s. 1. Which object will go farther?
2. Which object will land first?
3. If I drop a tennis ball at the same time that my friend throws one horizontally, which one will hit the ground first? (Neglect air resistance) How do you know?

I think the 2nd one will go farthest and the 1st one will land first and the 2 balls will land at the same time

Explanation:

I hope this is helpful

C . cannot travel through space.

Explanation:

Electromagnetic waves are composed of moving electric and magnetic field at right angle moving in the direction of propagation of wave. These waves have a transverse nature and travel with a constant velocity in vacuum.

Hence of the notes that Theo made in the list, option 3 which says cannot travel through space is incorrect.

Electromagnetic waves do travel in vacuum as they do not need any medium to travel.  They can travel through air, solid materials and through vacuum as well.