Who would be harder to stop: a professional hockey player skating 4 m/s or a fifth grader sharing at 4 m/s and why

1. If a fast-moving car making a loud noise approaches and moves past the person, what will happen as the distance between the two increases? A. The pitch of the sound being heard by the person will appear to be lower than the pitch of the source. B.

Do physical changes include changes in the states of matter?

Which term refers to a quantity that has both magnitude and direction? A: number B: arrow C: vector D: scalar

As an intern with an engineering firm, you are asked to measure the moment of inertia of a large wheel, for rotation about an axis through its center. Since you were a good physics student, you know what to do.

Why does cold water have less thermal energy than hot water?

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False