In the 2008 Olympics, Jamaican sprinter usain's bolt average shocked the world as he ran the 100 - meter dash in 9.69 seconds. Determine usain's average speed for the race.

A cylindrical metal can is to have no lid. It is to have a volume of 125π in3. What height minimizes the amount of metal used?

I have a hot air balloon that has 18.0 g helium gas inside of it. if the pressure is 2.00 atm and the temperature is 297k, what is the volume of my balloon?

Object is at rest when object collides with it. The collision is one-dimensional andelastic. After the collision object has half the velocity that object had before thecollision.

Scientists always prove or disprove their explanations by?

The bending of light when it travels from one material to another is called deflection refraction reflection correction

Thomsonâs experiment is credited with the discovery of which particle?

When you drop a pebble from height h, it reaches the ground with kinetic energy k if there is no air resistance. from what height should you drop it so it will reach the ground with twice as much kinetic energy?

Explain two ways that technology has had a positive impact on the environment and two ways that it has had a negative impact on the environment.

A rockets initially at rest, it steady gains speed at a rate of 10m/s^2 for 4.6s during take off. What was the rocket's top speed?

What do you mean by kintic theory of matter