If we say that one object is under free fall motion what do we mean in physics

What is the mass of an object traveling at 20 m/s with a kinetic energy of 4000 J?

What happens to water when wet clothes dry? explain

Explain two ways that carbon returns to the atmosphere from animals.

A patient needs to take 375 mg of ibuprofen twice daily. The pills in the bottle are each 250. mg. How many pills does the patient need to take each time she wants the 375 mg dosage?

1. The Sun orbits the center of the Milky Way. True False

You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. if the current in the short circuit is measured to be 18 amperes, what is the internal resistance of the battery?

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the ball?

Is there such a thing as real time weather radar? why not?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?