A ball is thrown upwards. > What effect does the force of gravity have on the ball ??
A. It produces a constant acceleration downwards.
B. It produces a constant acceleration upwards.
C. It produces a decreasing acceleration upwards.
D. It produces an increasing acceleration downwards.
Plz plz plz help me
I will mark brainliest

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.