Amouse is walking at 2.45 m/s. he sees a cat and accelerates at 4.92 m/s/s. how much time does it take him to reach a speed of 4.32 m/s?

In a system, when potential energy decreases, then entropy also decreases. true false

What sort of waves exhibit the doppler effect?

According to piaget’s stages of cognitive development, the child does not differentiate between self and other objects. the child repeats rewarding activities, discovers new ways to get what he or she wants, and may have imaginary friends. which period is described?