Find the speed of an object if it's going 400km in 5 hours

Which of these stars has the hottest core? (a) a white main-sequence star (b) an orange main-sequence star (c) a red main-sequence star

Suppose a log log's mass is 5kg. Aftee burning, the mass of the ash is 1kg. Explain what may have happened to the other 4kg?

A man pushes on a trunk with a force of 250 newtons the truck does not move how much positive work is done on the truck

Which of the following statements about atoms is true? Atoms may be joined together in well-defined molecules. Atoms may be arranged in repeating crystal patterns. Various groups of atoms compose all known substances.

Which is an example of potential energy? a a car driving on the road b a swimmer kicking their legs c a yo-yo in someone's hand d an arrow flying at a target

According to Einstein's special theory of relativity, the speed of light in a vacuum would be 3.0 108 m/s in which frames of reference? A. All frames of reference, regardless of acceleration B. Frames of reference that are accelerating C.

Neglect air resistance in this question. If you drop a ball from a height of 4.9 m, it will hit the ground 1s later. If you fire a bullet exactly horizontally from a height of 4.9 m, it will also hit the ground 1s later. Explain.

If a car decelerates at a rate of 5.1 m/s2, and if its initial speed was 24 m/s. How long will it take the car to stop?

Why do automobiles rust more easily in wet climates than drier climates?

You are preparing to do a hard task and so you say to yourself, "I can do it!" What is this an example of?