At what approximate altitude would clouds begin to form when the surface air temperature is 30 and the dew point is 14

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.