Find the kinetic energy of a ball of mass 200 grams moving at a speed of 20 m/s.​

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?