A ball is thrown upward from the ground with an initial speed speed of 25 meters/second; at the same instant, a ball is dropped from rest from a building 15 meters high. After how long will the balls be at the same height?

Which of the following will not have the same number of valence electrons

A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car during the trip? A. 4 km/hour B. 36 km/hour C. 960 km/hour D. 60 km/hour

In fission reactions, how must the binding energy per nucleon vary? a. The binding energy per nucleon remains constant as atomic number increases. b. The binding energy per nucleon increases as atomic number increases. c.

What is the difference between the way matter responses to transverse waves and a longitudinal wave

During constructive interference two waves travel through the same medium and the effects of the first wave are ___ the effects of the second wave

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

Unless otherwise posted, what is the speed limit in a school zone? florida

If you put in 10 J of work to push 1 c of charge against and electric field what will be its voltage with respect to its starting position? when released, what will be it's kinetic energy if it flies past it's starting position?

The process of changing the energy of a system by means of force. Force * Diatance