A142 kg boulder is located near the edge of a cliff 25 m above the ground. what is the gravitational potential energy of the boulder

What mass will a pumpkin have a force of 450 newton’s accelerates it to 110 m/s^2? include the correct units.

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?

Matter that emits no light at any wavelength is called