But my question is why is the velocity V2 that is going = 0 when computing the velocity V3 that is going upwards using the conservation of energy? in short, why does my method 2 not get the same V3 as my method 1
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You drop a 15 g ball from a height of 1.5 m and it bounces to a height of 0.80 m. Determine the total impulse on the ball when it hits the floor.
hi for the above question, i am able to obtain the answer using method 1 as shown in the picture.
But my question is why is the velocity V2 that is going = 0 when computing the velocity V3 that is going upwards using the conservation of energy? in short, why does my method 2 not get the same V3 as my method 1
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- A 0.075 slug softball is traveling at 60.00 feet per second to the left. A batter strikes the ball and sends it traveling at 90.00 feet per second to the right. The bat and softball are in contact for 0.05 seconds. At the start of the problem state which direction you choose to be positive. Draw and label a picture representation. a.)What is the initial momentum and direction of the softball? _______ b.)What is the final momemntum and direction of the softball? ______ c.)What is the impulse acting on the softball? ________ d.) What was the force of the bat striking the softball? __________please answer part 4, thanksA-C thank you!
- Consider the before- and after-collision momentum vectors in the diagram below. Determine the magnitude and direction of the system momentum before and after the collision and identify whether or not momentum is conserved. Finally, determine the magnitude and direction of the net external impulse encountered by the system during the collision. System Momentum Before Collision: _________________________ System Momentum After Collision: _________________________ Is momentum conserved? _________________________ Net External Impulse During Collision: _________________________The x-component of a force on a 15-g golf ball by a golf club versus time is plotted in the attached figure. a. Find the x-component of the impulse, in newton-seconds, during the following interval: [50 msec, 100 msec] b. Find the change in the x-component of the momentum, in kilogram meters per second, during the following interval: [50 msec, 100 msec]Problems: 1. A 1200 kg car has an initial velocity of 10 m/s i and accelerates for 6 s with a net force (in the +x-direction) given by the graph on the right. A. What is the impulse on the car? B. What is the average force on the car over the 6 s? C. How fast is the car moving after 6 s? net force (N) 16000 14000 12000 10000 8000 6000 4000 2000 0 0 1 2 3 456 t(s)
- m Р V Calculating Momentum, Mass, and Velocity 0 Directions: Solve the following problems by entering values into the red boxes. Stop decimals at the tenths place (use 1 decimal). When all entries are GREEN, you are done. Don't use spaces when entering values! Question 1 A bicycle has a momentum of 125 kg*m/s and a velocity of 2.0 m/s. What is the bicycle's mass? Question 2 A baseball has a momentum of 21 kg"m/s. What the baseball's mass if it has a velocity 7.0 meters per second to cover the distance? Formula to use: Question 3 What is the velocity of an emu that has a momentum of 1800 kg*m/s and a mass of 45 kg? Question 4 What is the momentum of a 1500 kg car that has a velocity of 4.0 m/s? Formula to use: Question 6 What is the momentum of a 6.5 kg bowling ball rolled down an alley with a velocity of 3.0 m/s? Question 5 A linebacker has a momentum of 60 kg*m/s and a velocity of 3.0 m/s. What is the linebacker's mass? Formula to use: Formula to use: Question 9 Formula to use:…Consider the discrete-time system given below and answer the following questions. y[n] = 0.6x[n] + 0.35x[n-3] + 0.05x[n-5] a. Is this an IIR or FIR system, explain b. What is the order of the system c. Find the impulse response h[n] of the given systemProblem 3: An egg with a mass m is dropped from rest from a height h and falls to the ground and breaks. Part (a) Write an expression for the magnitude of the net impulse imparted to the egg as it is stopped by the floor. Your expression will be in terms of m, h, and g. Neglect air resistance. Expression : J = Select from the variables below to write your expression. Note that all variables may not be required. B, y, 0, b, c, d, e, g, h, j, k, m, n, P, S Part (b) What is the numeric value for the magnitude of the impulse if m = 0.045 kg and h = 1.6 m Numeric : A numeric value is expected and not an expression. J =
- thanks!Far in space, where gravity is negligible, a 225 kg rocket traveling at 85 m/s fires its engines. (Figure 1) shows the thrust force as a function of time. The mass lost by the rocket during this 30 s is negligible. What impulse does the engine impart to the rocket? Express your answer in newton-seconds. At what time does the rocket reach its maximum speed? Express your answer with the appropriate units. What is the maximum speed of the rocket? Express your answer with the appropriate units.A firework explodes into three pieces as shown in the diagram below. Now that you have set up the equation for the x and y components of the final momentum of the firework, let's do some physics! Given: The initial firework had a mass of 9.0 kg and was launched at vi = 110 m/s vertically straight up. The firework explodes into three pieces of equal mass 3.0 kg. The angles θ1 = θ3 = 20 ∘. Speed v1 = 100 m/s. What is the speed v2? Note: the angles shown for mass m1 and mass m3 are relative to the horizontal x axis. Mass m2 is moving straight up (y axis).