Physics

Lessons: - Forces and Kinematics

Directions: Answer the following problems below by showing the complete solution. In return, I will give you a good rating. Thank you so much!

Note: Please be careful with the calculations in the problem. Kindly double check the units, significant digits, and the solution and answer if there is a deficiency. Thank you.

Thank you so much!

1.

1.2 A Round Trip 23 A person stalts walking at a constant speed of 2.3 111/5 in a straight line from point A to point B. At point B, she turns around and walks back to point A at a speed 0f1.1 111/5. What was her average speed for the entire trip in 111/5? Enter answer here 2b What is her average velocity in 111/5? Enter answer here 1.5 Dunk 53 A basketball hoop is 2.90 Ill above the ground. Lee is 1.95 111 tall, and the maximum vertical distance between the tip of his hands and the bottom of his feet is 2.81 DJ. To dunk a basketball, the tip of his hands must be at U. 190 m above the basketball hoop or more. What minimum vertical distance in 111 must Lee jump so that he dunks a basketball? Enter answer here 511 If Leejumped the vertical distance from the first pa rt, with what vertical speed must he jump in TIL)! 5? Enter answer here 5: If Leejumped the vertical distance from the first part, how long would it take for him to reach that vertical distance in 5? Enter answer here 1.1 Hair Growth WARNING: This homework problem is out of left field. It has nothing to do with anything covered in the class. It is just a fun problem to practice unit conversions. It really annoys some people, but it has become a tradition so I'm leaving it in. Buckle up. The subsequent problems will all be on topic. 1a Suppose your hair grows at the rate of 1 /35 in per day. Find the rate at which your hair grows in nm / s. Enter answer here 1b If an atomic layer is approximately 0.1nm thick, how fast are the protein synthesis machines working in atomic layers /s? Enter answer here1.3 Astronaut Ping Pong Ba An astronaut is playing with a ping pong paddle and ball in zero gravity. The astronaut is 12 m from a flat wall and floating toward it at 4 mfs. A ping pong ball bounces back and forth between his paddle and the wall at 1 1 III/(S. Eventually, the astronaut reaches the wall and traps the ball against it. {The ball's collisions are \"elastic\1.4 Sketchy Elevator 4a A 5 m tall elevator travels uniformly up an elevator shaft at 8 m / S. At some point in time, a bolt falls from the top of the elevator and falls freely down the shaft. You can ignore the effect of air resistance. How many seconds after the fall will the bolt pass the bottom of the elevator? Enter answer here 4b Now assume that the bolt falls from the *wall* of the elevator shaft when it is level with the top of the elevator, and then falls freely without air resistance. How many seconds after the fall will the bolt pass the bottom of the elevator? Enter answer here