An apple fell 4 m from the top of the tree to the ground in 0.9 s. what was its average speed?

a. 3.6 m/s

b. 4.0 m/s

c. 4.4 m/s

d. 4.5 m/s down

What is the sum of 9260 and 3240? Express your answer numerically to at least three significant figures.

Tiles are 6 mm long how many can you fit into a space 54 cm long

How does the temperature of water affect its evaporation science projects?

What was the great insight Newton had regarding Earth's gravity that allowed him to develop the universal law of gravitation?

A container holds 64 atoms of a radioactive isotope. This isotope has a half-life of 1.5 months. How many atoms of the radioactive isotope will be in the container after 3 months, or two half-lives.

A water drops falls from the roof of a house during 3s, how high is the house?

A cannon fired horizontally at 20 m/s from the top of a cliff lands 80m away. how tall is the cliff

Who is galileo galilei

an athlete whirls a 7.00 kg hammer tied to the end of a 1.3 m chain in a horizontal circle the hammer moves at the rate of 1.0 rev/s what is the centripetal acceleration of the hammer

Relaying a message from a membrane receptor to a molecule that performs a specific function within a cell occurs when