A1k ball is thrown into the air the air with an initial velocity of 30 m/s how much kinetic energy does the ball have

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

How will the system respond to a temperature increase?