A ball is thrown towards a wall 10m away with a velocity of 40m/s. At what angle must it be thrown if it is to enter a hole on the wall at a height 7m from the ground, neglecting wind effects.​

Arescue plane flying horizontally at spots a survivor in the ocean directly below and releases an emergency kit with a parachute. because of the shape of the parachute, it experiences insignificant horizontal air resistance. if the kit descends with a constant vertical acceleration of, how far away from the survivor will it hit the waves?

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem

Which radioisotope is used in dating geological formations?