An 85kg clown standing on a 12.0kg skateboard throws a 3.00kg ball at you with a speed of 14.0m/s. The skateboard moves backwards. Determine the sped of the skateboard. Assume friction is negligible and that the skateboard and the clown were initially at rest.
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- When balls collide in a game of pool, the collision is almost perfectly elastic. Let us assume we have a perfectly elastic collision of two pool balls, one weighted heavier than the other, M1 = 0.175 kg and M2 = 0.250 kg. 1. Suppose the initial velocity of ball 1 is v1i = 1.2 m/s and the initial velocity of ball 2 is v2i = -0.5 m/s. Determine the initial momentum and kinetic energy. Show your work. 2. Determine the final velocities of the two balls v1i and v2i after this elastic collision. Show your work. 3. If the collision took place in 1/20 of a second, t = 0.05 s, determine the average magnitude of the normal force acting between the balls during the collision. Show your work.A 5000 kg final stage of a spaceship ejects the 10000 kg second stage. Before ejection, the two stages travel with a velocity of 180 m/s. If, after ejection, the second stage travels at 50 m/s opposite the direction of its initial motion, what is the speed of the final stage? Show all workNO NEED TO SHOW ANY WORK JUST FINAL ANSWER AS QUICKLY AS POSSIBLE! I read the honor code and it says that a question can have up to 3 subparts (i.e. part a, b, c and d). Question: What was the approximate acceleration, in m/s^2, during the burning of the rocket? Sub questions: a. At what time, in seconds, does the rocket reach its maximum height? b. What is the velocity of the rocket, in m/s, just as it reaches its maximum height? c. What is the maximum altitude, in meters, reached by the rocket? d. What is tf?
- Solve for the ff.: (Answers should be at 3 decimal places) a. What will the magnitude of the final velocity u2 and m2 after the collision. b. What will be the direction of motion β of m2 after the collision? c. What is the total kinetic energy of this system before the collision?A 22-g bullet traveling 240 m/s penetrates a 2.0-kg block of wood and emerges going 150 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges? please show your work, including diagrams, algebraic equations, and enough written explanations that somebody who is not familiar with the problem could understand what you are doing.momentum Solve problem 1 and 2. Show your complete and detailed solutions. 1. Jennifer is walking at 1.03 m/s. If she weighs 583 N, what is the magnitude of her momentum? 2. A 1.0-kg ball has a velocity of 12 m/s downward just before it strikes the ground and bounces up with a velocity of 12 m/s upward. What is the change in momentum of the ball?
- A 5kg rifle is attached to a horizontal cable such that it will freely move neglecting friction. If the rifle is made to fire a 50g bullet with a muzzle velocity of 300m/s, what will be the velocity of the rifle as it moves opposite the direction of the bullet? 1.What is the correct formula to use to this sample problem? 2.What type of collision happen from the given situation of the sample problem? 3.Defend/Prove your answer for item number 2 4.Show your complete solution in calculating the Velocity of the Gun?Mechanic Physics: Please make sure this is right!! In the figure, block A (mass 1.6 kg) slides into block B (mass 2.9 kg), along a frictionless surface. The directions of velocities before and after the collision are indicated; the corresponding speeds are vAi = 5.7 m/s, vBi = 2.7 m/s, and vBf = 4.4 m/s. What is velocity vAf (including sign, where positive denotes motion to the right)?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.
- [6] Instruction: Choose the correct answer. 6. If you double the mass of a system but retain its velocity, what happens to its momentum? a. Increases to twice. b. Decreases to one-half. c. Increases to four times. d. Decreases to one-fourth.Instruction: I already have the answer in this problem but I can't understand some part of it. Look at the image posted to see what part I can't understand and please explain it. I can't understand "Part B". How did he came up with the formula, h3=e2h2? Topic: Impulse and Momentum A ball is dropped onto a horizontal floor. It reaches a height of 144 cm on the first bounce, and 81 cm on the second bounce. Find (a) the coefficient of restitution between the ball and floor and (b) the height it attains on the third bounce.Instructions: With the simulation in picture 1 complete the table in picture 2. To do this: Measure the velocity orientation of each mass before and after the collision using an angle protractor. Give the angle to the positive x-axis. (1 (before), 2 (before), 1 (after), 2(after)) 2. Calculate your speeds before and after the collision according to the components x and y. (u1x, u2x, u1y, u2y, v1x, v2x, v1y, v2y) 3. Find the speed of each mass before and after the collision. ( u1; u2; v1; v2) 4. Calculate the amount of motion of each mass before and after the collision as well as the total amount of motion of your mass system always according to x and y. (p1x (before), p1x (after), p2x (before), p2x (before), p1y (before), p1y (before), p2y (before), p2y (after), Px (before), Px (after), Py (before), Py (after)) 5. Calculate the kinetic energy of each mass and the total kinetic energy before and after the collision. (K1 (before), K1 (after), K2 (before), K2 (after),…