How long must a force of 100 N act on a 25 kg object to change its velocity by 2 m/s?

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Smallest intensity of a stimulus that you can detect 50 percent of the time is