Suppose that you have a mass of 45.7 kg and are standing on frictionless roller skates. Someone then throws you a 2.50 kg mass with a velocity of 14.5 m/s and you catch it. What will be your resultant velocity?
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- The solution is incomplete. Pls. read the directions. I said in GRESA format.Directions: Illustrate and solve the following problems in a short bond paper. Show the complete solution (in GRESA format), always include the SI units on your solution, express your answer in two decimal places and box your final answer.2. The driver of an SUV (m = 1800 kg) moving at a velocity of 3.50 m/s isn’t paying attention and rear ends a car (m = 1200 kg) that is at rest as it waits for the red light to turn green. On impact, both drivers lock their brakes. The SUV and car stick together and travel beyond the line. What is the velocity of the cars after the collision?(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Jane and John are both on roller skates and facing each other, First Jane pushes John with her hands and they move apart. They get together again, and John pushes Jane equally hard with his hands and they move apart Is their subsequent motion any different in the two cases? Why or why not?Gentlemen, Attached is a screen shot of the solution you have just provided. Original calculation task was: 1 kg projectile is launched at 30 m/sec speed 60 degrees from horizontal. Find a speed after 2 sec. If we change mass of projectile from 1 kg to 2 kg then what will we need to do?
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) An astronaut working with many tools some distance away from a spacecraft is stranded when the "maneuvering unit" malfunctions. How can the astronaut return to the spacecraft by sacrificing some of the tools?(Indicates a review question. which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . An extreme roller coaster is moving along its track. During a brief period the track exerts a downward force on the cars. Describe what is happening. (What is the shape of the track at this point?)Match each graph with the correct interpretation of the area beneath the graph.force vs position is momentum, displacement, acceleration, impulse, work, or mass? force vs time is momentum, displacement, acceleration, impulse, work, or mass? velocity vs time is momentum, displacement, acceleration, impulse, work, or mass?
- Please can you help me with these questions? 1) A massive space freighter wants to accelerate at 1g. It takes time for the rocket engines to rev up, and turn up to their desired power. The freighter starts from rest, and its acceleration (until it reaches 1g) is: "refer to the picture". The captain wants to reach 1g at time t = T. What must A be, to satisfy a(T) = 1g? 2) The desired final acceleration is now 4g, with a corresponding value for A. Recall the equation in the picture. Acceleration feels like a weight, and a rapid change in acceleration feels like a rapid change in weight. You don't want a too rapid change in weight -- the derivative a'(t) shouldn't be too great. Therefore find T (in seconds) such that the maximum value of a'(t) is 1/80 m/s3. 3) Now, A = 0.6 and T = 2800 seconds. The freighter begins at rest and reaches the desired acceleration in time T. Now calculate and answer v(T) in m/s. Thank you.The asnwer was incorrect and I recieved the following as feedback: "You may have used the nonrelativistic (low-speed) expression for momentum. That is not justified in the present case."A 500. gram cart moving at .360 m/s has how much momentum? (careful...units!) ______________ How fast must a 250. gram cart be traveling to have a momentum of .450 kgm/s? _____________ A .230 kg baseball is thrown with a speed of 41 m/s. What is the ball’s momentum? ______________ If the above ball comes to rest in the catcher’s mitt in .085 seconds, how much force does the ball apply on the catcher’s mitt? (hint: use the impulse-momentum theorem ) ______________
- in landing rocket experiment . my doctor want me to write a 5 lines about what I have learned from this screenshot. explain each graphWhat is the momentum of a 100-kilogram shell if its speed is 1,500 m/s? *Write the questions on the upper portion of the paper, followed by the Given, Requirements, Figure (FBD), Formula, Solutions, and box your final answerAnswer the questions briefly in not more than 5 sentences. 1. What will happen to an object at rest when an unbalanced force acts on it? 2. What will happen to a moving object when an unbalanced force acts on it?