A car changes speed from 25 m/s to 10 m/s in 240 seconds. Describe its acceleration.

If a machines maximum power rating is 200 watts, what is the fastest time for it to do 1,000J of work?

Which statement best describes geothermal energy? a. Geothermal energy can be used to fuel vehicles. b. Geothermal energy increases the risk of a nuclear accident. c. Geothermal energy is the most abundant nonrenewable resource. d.

A motorist is traveling at 20 m/s. He is 60 m from a stoplight when he sees it turn yellow. Is reaction time, before stepping on the brake, is 0.50 s. What steady acceleration (slowing down) while braking will bring him to a stop right at the light?

According to Newton's second law of motion, the acceleration of an object is ir velocity mass net force displacement

Your friend thinks that the escape speed should be greater for more massive objects than for less massive objects. Provide an argument for his opinion. Then provide a counterargument for why the escape speed is independent of the mass of the object.

How does the overtone number relate to the standing wave pattern number

Which of the following statements about Em waves is true? A. Em waves all have the same speed B. Em waves all have the same wavelength C. Em waves only travel through water D. Em waves all have the same amount of energy

A teacher has asked four students to state a scientific theory. Which student is correct?

What are the two main currents that affect the US on the east and west coast?

What role do volcanoes play in the flow of energy and cycling of matter on earth?