A soccer player heads the ball and sends it flying vertically upwards at a speed of 10.5m/s. How high above the players head does the ball travel?

With i really need the correct answer!

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

If element x has 99 protons how many electrons does it have