Imagine a rock is dropped from the top of a tall building. After 2 seconds of falling, the rock's instantaneous speed is approximately 20m/s. does anyone know is it true or false

Which statement is true regarding flexibility? a. joint's range of motion cannot be maintained with age. b. A joint's range of motion will be lost if the joint is not used regularly. c.

A sample of a radioactive elements must contain atoms A. with a stable nuclei B. with unstable nuclei C. in the excited state D. in the ground state

Solve without using a calculator. on a cold day near the ocean, it was found that 8 g of an unknown gas occupies a volume that is a little less than 6 l. based on this information, what is the most likely identity of the unknown gas?

Which semiconductors are used in each of the three parts of a PNP transistor The base and the emitter are p-type, and the collector is n type The emitter and the collector are n-type, and the base is p type The base and the collector are p type, and

A block is given a very brief push up a 20.0° frictionless incline to give it an initial speed of 12.0 m/s. (a) how far along the surface of the plane does the block slide before coming to rest?

Which of the following would be a good question that could be scientifically investigated? what is the best advice a parent can give a child what is the most appropriate number of dogs per household do cherry popsicles freeze slower than orange

Formulas (equations) : A = 3x and B = 5x + 1 As x increases, does A or B go up faster? if x=0, then A=? if x=1 then B=?

Sound travels 2146 m through a material in 1.4 seconds. What is the material?

What two pieces of data indicates that uranus resides in the outer layer of the solar system.

What is acceleration? a. change in velocity/change in time b. change in distance/change in time c. change in mass/change in volume d. change in pressure/change in time