How does a controlled experiment work?

A bird flies from the South Pole to the North Pole. part of the journey is 1,000 miles that takes 2 weeks, what is the birds velocity in that time, what is the answer

Which type of force will an object move towards

How do you identify an unknown substance if you only know it's density

When a hole is made in the side of a container holding water, water flows out and follows a parabolic trajectory, similar to an object in projectile motion. If the container is dropped in free fall, the water flow: a. goes out in a straight line b.

Your friend says that inertia is a force that keeps things in their place, either at rest or in motion. Do you and your discussion partners agree? Why or why not?

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells

Basic of Archimedes's principle of how fluid can make body to float and sink.

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 625 m/s in a time of 1.10 ms (milliseconds)