| Question | Answer |
| 1) An airplane travels 2000 kilometers in 4 hours, lands to refuel for 2 hours, then travel 3000 kilometers in 2 hours. What is the average speed of the plane over the entire trip in km/hr? | 625km/hr
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2) A car is driving north at 25 m/s. It slows to 10 m/s in 5 seconds. What is the acceleration of the car? | -3m/s2
| 3) A 5-kg box is traveling at a constant velocity of 2 m/s. What is the net force acting on the box? | 0N
| 4) A 60-kg man and a 40-kg woman accidentally collide on the street because they were texting on their cell phones. Who will experience a greater force from the collision? | neither(equal and opposite forces)
| 5) A satellite is orbiting the earth in a circular motion. What is the force that is causing the satellite to move in this manner? In what direction does this force act? | Gravity, inward toward the core of the earth
| 6) What is the total mechanical energy of a 50-kg woman walking at 2 m/s on a 10-m tall building? | 5100J
| 7) A ball of an unknown mass falls from a 3.2-m tall building. What is the velocity of the ball before it hits the ground? | 8m/s
| 8) What is conserved in inelastic collisions? | momentum
| 9) A 1-kg ball collides with a 3-kg resting box with a speed of 4 m/s. The two objects stick together and move together. Find the resulting velocity after the collision. | 1m/s
| 10) Temperature is a measure of what kind of energy? | KE
| 11) Using the words "heat" and "transfer" explain why an ice cube feels cold in your hand. | The heta from your hand transfers to the ice cube. You lose heat, so you feel cold.
| 12) A proposed ideal heat engine would run with a high temperature reservoir at 800 kelvin and a low temperature reservoir at 300 kelvin. When the engine is running, it extracts 400 joules of energy from the hot reservoir and does 50 joules of work each minute. How much energy is expelled to the low temperature reservoir each minute? | 350J
| 13) An ice cream cone melts in the sun. Describe what happens to the ice cream's entropy and the surrounding's entropy. | ice cream's entropy increases, surrounding's entropy decreases.
| 14) Which of the following is not an electromagnetic wave? X-ray, Sound wave, Radio Wave, Visible light | Sound wave
| 15) Find the wavelength of a wave traveling at 5000 m/s with a frequency of 60 Hz. | 120m
| 16) Explain in 10 words or less why sound travels fastest through solids | particles in solids are closer together
| 17) A person sitting in front of a lamp looks to be “glowing” around the edges. What interference phenomena explains this vision? | Diffraction
| 18) You want to build a light set-up for a party and you have 20 separate lightbulbs and one battery. If you wanted your party to be bright, what kind of circuit would you set up? If you wanted your party to have darker mood lights, what kind of circuit would you set up? | bright=parallel, darker=series
| 19) What is the power dissipated across a 40-ohm resistor and a 10-V battery? | 2.5watts
| 20) Name three ways to increase induced current with a magnet and a metal coil | increase the number of coils, increase movement, and flip the magnet |
