# Using Physics Formulas Chapter Exam

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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#### Question 1 1. A student conducts an experiment to determine the relationship of mass to the distance a spring travels. There are four masses each with a different color. The red has a mass of 5kg. The blue has a mass of 10kg. The green has a mass of 15kg, and the purple has a mass of 20kg. Which mass will cause the spring to recoil the most?

#### Question 2 2. A student attaches a 5 N weight to a spring. The spring starts at 0.2m above the floor and ends at 0.15m above the floor. What is the spring constant?

Use the following scenario to answer questions:

A person weighing 70 kg drops from an airplane that is 1500 meters above the ground. After 15 seconds they have fallen 700 meters.

#### Question 3 3. How far would this person fall after the 15 seconds if they were falling in free fall?

Use the following scenario to answer questions:

A person weighing 70 kg drops from an airplane that is 1500 meters above the ground. After 15 seconds they have fallen 700 meters.

#### Question 4 4. What is the acceleration due to air resistance that this person is experiencing?

You have piece of paper with two slits that are 2346 nm apart and each slit is 1546 nm. You want to create two dark spots that are 1.3 meters away from each other on a screen that is 5 meters away.

#### Question 5 5. What wavelength of light should you use?

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You are on an adventure and in order to open up a lock you need to shine a light into two spots that are exactly 2.3 meters apart. You need to stand 5 meters away from the spots. The flashlight that you have has a wavelength of 597 nm.

#### Question 6 6. What is the distance you'll need between the two slits to get the lights to shine properly?

Use the following scenario to answer the questions:

A 520 gram ball is held at chest height (1.2 meters) and then dropped. Recall that acceleration due to gravity is 9.8 m/s^2.

#### Question 7 7. What is the final velocity of the ball just before it lands on the ground?

Use the following scenario to answer the questions:

A 520 gram ball is held at chest height (1.2 meters) and then dropped. Recall that acceleration due to gravity is 9.8 m/s^2.

#### Question 8 8. If the ball is travelling an average speed of 3 m/s how long does it take for the ball to hit the ground after dropping it?

#### Question 9 9. What is the mass of an object with kinetic energy of 1000 Joules and velocity of 5 meters per second?

#### Question 10 10. If an object's initial kinetic energy is 50 Joules and final kinetic energy is 70 Joules, then the net work done on this object is equal to _____?

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Use the following spring to answer the questions. The spring can stretch out to 26 cm using 2 N of force. The highest amplitude it can stretch out to is 125 cm.

#### Question 11 11. What is the maximum possible potential energy of the spring?

Use the following spring to answer the questions. The spring can stretch out to 26 cm using 2 N of force. The highest amplitude it can stretch out to is 125 cm.

#### Question 12 12. What is the period of the spring if it is traveling 15 m/s when it is stretched out to 45 cm?

####
Question 13
13.
What is the displacement of side *x*?

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Question 14
14.
What is the displacement of the side *x*?

You are swinging a ball (weighing 5 kg) around on a rope. The rope is 1.4 meters long. It takes 4 seconds for the ball to make one complete rotation.

#### Question 15 15. What force is experienced by the ball?

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You are swinging a ball (weighing 5 kg) around on a rope. The rope is 1.4 meters long. It takes 4 seconds for the ball to make one complete rotation.

#### Question 16 16. Which of the following will increase the acceleration of the ball the most?

#### Question 17 17. A 6 kg mass moves at 4 m/s i-hat + 3 m/s j-hat. It collides inelastically with a 5 kg mass moving at 4 m/s i-hat. What is the momentum of the combined masses immediately after the collision?

#### Question 18 18. A 19 kg mass is moving at 10 m/s i-hat, and collides elastically with a 8 kg mass at rest. What is the velocity of the 8 kg mass immediately after the collision?

#### Question 19 19. A cylinder with a uniformly distributed mass is placed on a 10 meter high incline. What would be its linear velocity when it reaches the ground?

#### Question 20 20. What would be the rotational KE of a 5 kg cylinder with a 10 meter radius and an angular velocity of 5 rad/s if all its mass was concentrated in the center?

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#### Question 21 21. A plastic raft floating in a pool displaces 0.2m3 of water. A man weighing 1,000N wants to sit on the raft. Will the raft support his weight?

#### Question 22 22. At a cookout, soda cans were submerged in a bucket of ice, which melted into water. The cans have a radius of 0.05m and are submerged 0.09m in the water. What is the buoyant force acting on the can?

What is the height in meters of a 5.5 foot tall person? You are given the following information: 1 foot = 12 inches 1 inch = 2.54 centimeters 1 meter = 100 centimeters

#### Question 23 23. Using dimensional analysis how tall is this person, in meters?

#### Question 24 24. What are the final answer and units of this dimensional analysis equation?

#### Question 25 25. A 200 kg object moves with an acceleration of 10 m/s2. What is the force acting on the object?

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#### Question 26 26. A 15 kg boy is pulled horizontally on a sled through the snow, by a force of 75 N. The force of friction from the snow acts opposite to the direction of movement of the boy and is 15 N. What is the acceleration of the boy?

#### Question 27 27. Which is Newton's Third Law?

####
Question 28
28.
Two blocks are being held over a frictionless pulley. One block has a mass of 2 kg and acceleration *a1* and one has a mass of 4 kg and acceleration *a2*. How do the accelerations of the blocks compare to each other?

#### Question 29 29. If you drop a coin from a height of 10 meters, how long will it take it to hit the ground?

#### Question 30 30. If the initial vertical velocity of a projectile is 0 meters per second, what will be its vertical velocity after 3 seconds?

#### Using Physics Formulas Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!