The SI unit for speed is

Your tired 10 lb. baby cousin is cradled in your arms as you're walking back and forth across a 15m room to get her to fall asleep. Explain what work was done on the baby.

What evidence supports a conservation law? A: Energy from sunlight becomes glucose during photosynthesis. B: Carbon dioxide becomes glucose and oxygen during photosynthesis.

What color does the star alpha centauri appear to be? a. red c. blue b. yellow-white d. blue-orange?

A 0.22 kg air track glider moving at 0.60 m/s a collides elastically into a 0.44 kg glider at rest. After collision the 0.22 kg glider is moving with velocity - 0.20 ms. What is the speed of the 0.44 kg glider after collision

Which of the following statements is true? A) An object that is accelerating is always changing direction. B) An object at rest has an instantaneous acceleration of zero. C) Instantaneous acceleration is always changing.

A carpenter is working on a house two blocks away. you notice a slight delay between seeing the carpenter's hammer hit the nail and hearing the blow. at what time does the event "hammer hits nail" occur?

There have been books written about how blood type affects personality or body shape. Knowing that blood type is determined by antigens on erythrocytes, are these claims scientifically valid? O True O False

A stone is dropped from a 80m bridge. How long does it take to fall?

How does an iron nail become a rusty nail

What is the velocity of a bullet train that moves 400 meters west over 3 minutes anad 20 seconds?