A train moves south with a speed of 20 m/s. A man on the train walks south with a speed of 0.2 m/s relative to the train. How long does it take the man to move 8 m relative to the train? A. 15 s B. 32 s C. 40 s D. 0.41 s

How to use unbalanced forces in a sentence

What is the purpose of cpr?

Why must a specimen used for viewing in a transmission electron microscope be extremely thin?

How much power does it take to lift 30.0 N 10.0 m high in 5.00 s?

A day is defined as the time it takes for a planet to rotate once on its axis, while a year is defined as the time it takes for a planet to orbit the sun once. Which planet has a longer day than year? 1. Mercury 2. Venus 3. Jupiter

How many layers of material were the roads made of? a. two c. four b. three d. five

Red light has a shorter wavelength than yellow light.

Approximately what is the parallax angle of a star that is 20 light-years away?

If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these stars? A. Wavelengths measured would match the actual wavelengths emitted. B.

Two fire trucks with sirens speeds towards and away from an observer. Which statement is true involving the Doppler effect observed by the observer?