Describe and explain the motion of a small ball floating on a pond when waves travel across the pond

Railroad car A rolls at a certain speed and makes a perfectly elastic collision with car B of the same mass. After the collision, car A is observed to be at rest. How does the speed of car B compare with the initial speed of car A?

You go to another forest and measure the shadow of a tree as being 6 meters long. The shadow of your meter stick is 2 meters long. How tall is the tree?

A container has 79000cm3 of mercury. Find the mass of mercury if the density is 13.6g/cm3

There are many different mediums that waves travel through. What type of wave causes distortion of a medium?

If a space ship is traveling with a constant acceleration of 75 m/s^2 and travels for three weeks, how far did it travel and what was it's velocity before it stopped?

Describe and explain the motion of a small ball floating on a pond when waves travel across the pond

Describe how the doppler effect explains why an approaching fire engine's siren has a high pitch?

How does the effect of poison on lions and hyenas compare to the effect of poison on vultures

Which simple machine belongs to the inclined plane family

How should science advance?