A car traveling east increases its velocity from 4 m/s to 19 m/s in 5 s. What is the acceleration of the car?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?