A cyclist speeds up from 3 m/s to 7 m/s in 8 seconds.
a. What is its change in velocity

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?

Positrons are spontaneously emitted from the nuclei of

What organization and environment is described above?