Please solve question 3 The image contains several physics problems and their solutions. Below is a transcription formatted for an educational website:---### Physics Problems and Solutions1. **Hockey Puck Motion** - A 0.15 kg hockey puck is initially sliding in the positive x direction at 1.0 m/s. A player taps the puck, exerting a force of 0.30 N in the positive y direction for a time of 0.1 s. What is the puck's final velocity (magnitude and direction)? - **Answer:** 2.236 m/s at 63.4° above the horizontal2. **Car Collision** - A 1000 kg car traveling west at 20 m/s collides with a 800 kg car traveling east at 16 m/s. The collision locks the cars together. - a) What is the velocity (magnitude and direction) of the two-car system after the collision? - b) Now assume the 800 kg car is moving with the same velocity as before but traveling north when the collision occurs. What is the velocity (magnitude and direction) of the cars after they have collided? - **Answers:** a) 4.0 m/s westward, b) 13.2 m/s at 57° west of north3. **Neutron Decay** - A neutron decays into a proton and an electron. The neutron was initially at rest. After the decay, the electron is found to be travelling at a velocity of 0.2c in the positive x direction (here, the speed is represented as a fraction of the speed of light, c). What is the direction and speed of the proton? - **Answer:** -3.3 x 10⁻¹ m/s4. **Medicine Ball Drop** - A 1.2 kg medicine ball drops vertically onto a floor, hitting with a speed of 25 m/s. It rebounds with an initial speed of 10 m/s. - a) What impulse acts on the ball during the contact with the floor? - b) If the time of contact is 0.020 s, what average force is exerted on the floor? - **Answers:** a) 42 J·s, b) 2.1 x 10³ N5. **Electron Collision with Hydrogen Atom** - An electron collides elastically

Answered: Image /qna-images/answer/9e461a4c-a5d6-409b-b75c-ccb4b90f8e4e.jpg

west of north 3. A neutron decays into a proton, and an electron. The neutron was initially at rest. After the decay, the electron is found to be travelling at a velocity of 0.2 c in the positive x direction (here, the speed is represented as a fraction of the speed of light, c). What is the direction and speed of the proton? Answer: -3.3 x10 m/s

west of north 3. A neutron decays into a proton, and an electron. The neutron was initially at rest. After the decay, the electron is found to be travelling at a velocity of 0.2 c in the positive x direction (here, the speed is represented as a fraction of the speed of light, c). What is the direction and speed of the proton? Answer: -3.3 x10 m/s

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Please solve question 3

The image contains several physics problems and their solutions. Below is a transcription formatted for an educational website:

---

### Physics Problems and Solutions

1. **Hockey Puck Motion**
- A 0.15 kg hockey puck is initially sliding in the positive x direction at 1.0 m/s. A player taps the puck, exerting a force of 0.30 N in the positive y direction for a time of 0.1 s. What is the puck's final velocity (magnitude and direction)?
- **Answer:** 2.236 m/s at 63.4° above the horizontal

2. **Car Collision**
- A 1000 kg car traveling west at 20 m/s collides with a 800 kg car traveling east at 16 m/s. The collision locks the cars together.
- a) What is the velocity (magnitude and direction) of the two-car system after the collision?
- b) Now assume the 800 kg car is moving with the same velocity as before but traveling north when the collision occurs. What is the velocity (magnitude and direction) of the cars after they have collided?
- **Answers:** a) 4.0 m/s westward, b) 13.2 m/s at 57° west of north

3. **Neutron Decay**
- A neutron decays into a proton and an electron. The neutron was initially at rest. After the decay, the electron is found to be travelling at a velocity of 0.2c in the positive x direction (here, the speed is represented as a fraction of the speed of light, c). What is the direction and speed of the proton?
- **Answer:** -3.3 x 10⁻¹ m/s

4. **Medicine Ball Drop**
- A 1.2 kg medicine ball drops vertically onto a floor, hitting with a speed of 25 m/s. It rebounds with an initial speed of 10 m/s.
- a) What impulse acts on the ball during the contact with the floor?
- b) If the time of contact is 0.020 s, what average force is exerted on the floor?
- **Answers:** a) 42 J·s, b) 2.1 x 10³ N

5. **Electron Collision with Hydrogen Atom**
- An electron collides elastically

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