An object is dropped on Earth from a height of 15 m. How long did it take for the object to reach the ground?

A) 1.2 seconds

B) 1.5 seconds

C) 1.8 seconds

D) 3.0 seconds

Which tool is a wheel and axle?

What might happen to the continents if the Atlantic Ocean continues to expand because of movement along this ridge?

Where is the youngest rock in the earth's crust found? A. near the boundary between ocean crust and continental crust B. along the continental slope C. in the center of the continents D. at the center of the mid-ocean ridge

Where is the fulcrum of a broom?

The particles in a nucleus are held together primarily by the (1) strong force (3) electrostatic force (2) gravitational force (4) magnetic force

On a spring break vacation you decide to visit the grand canyon near flagstaff, arizona. then you head south to visit some friends in phoenix, arizona. while on the drive you notice that the temperature is increasing along the route.

An object weighing 1.840 kg has a volume of 0.0015 m3. What is the density of the object in g/cm3?

What is the purpose of cooking using sunlight?

Two planets of the same mass are observed. Which of the following distances between the two planets would result in the least gravitational attraction? A. 90 light years B. 80 light years C. 60 light years D. 50 light years

How would you make a structure stronger?