A 50kg skater at rest on a frictionless rink throws a 2kg ball, giving the ball a velocity of 10m/s. Which statement describes the skaters subsequent motion?

Explain why the phrase "by ordinary means" was added to the Law of Conservation of Energy

An object is dropped from the top of a tall building. At 2 seconds, it is 64 feet from the top of the building. At 4 seconds, it is 256 feet from the top of the building.

The train is traveling at 120 Km/h and they must travel 950 km. How long will it take them to reach their destination?

Which of the following are true when meteorologists predict the weather? Select all that apply. Start with computer generated weather models Long-term forecasts are usually accurate Short-term forecasts are usually accurate Predicting storms is

What force is necessary to accelerate a 1250 kg car at a rate of 40 m/s^2?

For slowly moving objects, the drag force in water is approximately proportional to the speed of the object. The Escherichia coli (E. coli) bacterium propels itself slowly through water by means of long, thin structures called flagella.

How do electric and magnetic fields interact to create electromagnets?

Select the correct answer from each drop-down Two magnets are placed as shown in the 00 В D between the poles B and . And the force of between the poles A and DIS Reset Next

Two main pieces of evidence support the big bang theory and the idea that our universe is continually expanding: Doppler shift and cosmic background radiation. Explain how these phenomena provide evidence of the expansion of the universe.

How was bohr atomic model similar to Rutherford's model