Are only sedimentary rocks used for relative age determinations?

Pete is driving down 7th street. He drives 150 meters in 18 seconds what is his speed on meters per second

Applying the Law of Conservation of Momentum Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision.

Radium-214 decays in an alpha decay. a. what is the mass number of the daughter isotope

Which parameter of the present universe, more than any other, is considered to be critical in determining the ultimate fate of the universe?

a 2000 kg truck is traveling at a velocity of 30 m/s. What velocity must a 1000 kg car have in order to have the same momentum as the truck?

A boulder on top of a cliff has a potential energy of 12400J. How high above is the boulder?

If the graph represents speed what is measured on the x and y axes

It is difficult to lift a heavy stone than the lighter one on the earth, why?

The vapor pressure of ethanol at 25 degrees C is 7.83 kPa. Calculate the vapor pressure in atm. Round answer to 3 significant digits.

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.