A train travels 53 kilometers in 1 hours and then 81 kilometers in 3 hours what is its average speed?

Find the dimension of density

Why wil an ice cube melt if it is compressed even if it remains at the same temp

You lift a 45-newton bag of mulch 1.2 meters and carry its distance of 10 meters to your garden. How much work was done?

Hydrogen is grouped with the alkali metals because it?

A red ball with a velocity of 3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of?2.0 m/s. what is the velocity of the two balls after the elastic collision?

The limestone cave was formed by the action of underground ...; ... A) earthquakes B) faulting. C) organisms. D) water.

What acceleration does a 9 N force produce in a 3 kg object? Make sure to show your work. (The 4 steps)

What type of mixture is Skittles candy?

What is the relationship between a planet's position in the solar system and the length of that planet's year?

The process of how rocks can tell us how old the earth is