What impulse is needed to stop a 1000 kg car traveling at 24 m/s? N•s
Q: What impulse is needed to stop a 1000 kg car traveling at 24 m/s? N.s
A: Given, mass of the car is, m = 1000kg the initial velocity of the car is, u=24m/s Now from the…
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Q: p = mv J = Ft Ft = m Av What impulse is needed to stop a 1700 kg car in 15 seconds if it was…
A: Given Mass (m) = 1700 kg velocity (vi) = 25 m/s Time (∆t)= 15 s When car stops vf = 0…
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- A truck of mass 1.5x10^4 kg travelling at 85 km/h [S] collides with a car of mass 1.2x10^3 kg travelling at 30 km/h [S]. The collision is perfectly inelastic. a) Calculate the magnitude and direction of the velocity of the vehicles immediately after the collision. b) Determine the decrease in kinetic energy during the collisionProblems 1. A 3.7kg Superball hits the floor with a speed of 6m/s, and it bounces back up into the air with a speed of 4m/s. If the collision takes 0.03s, what is the average normal force of the floor on the ball? You can use the table but you don't have to. 12112 Pf Y •2. You want to estimate from how high if it is safe to jump onto a concrete floor. For this, you consider impulse and the force of impact. If you jump from a chair of height of 0.50 m, and land on a concrete floor with stiff legs, it just starts to hurt. Therefore, you consider the average force on your body in such a landing to be your ‘safe limit’. In this case, you estimate that your body moves by about 0.75 cm during the landing. If you allow yourself to bend your knees upon landing on the same concrete floor, you are able to mitigate the force of impact. You estimate that, when bending your knees during landing, your body moves by about a foot, or 0.30 m. For the purpose of this exercise, you consider yourself with a mass of 60 kg.Given the estimates made above, from how high can you safely jump onto a concrete floor?
- 32)A railroad car of mass 3.3 x 104 kg moving at 5.00 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? Need Help? Read ItIf the momentum of an object is trippled, its kinetic energy will change by what factor? I think it changes 9 times? not sure.
- An 0.8kg ball, initially at rest, is launched from a kicker's foot 30° above the horizontal with a velocity of 5.0m/s. The magnitude of the impulse exerted on the foot by the ball is most nearly A. 2.75N•s B. 2N•s C. 1N•s D. 2.5N•s E. 3.46N•sA basketball with a mass of 0.60 kg is dropped from rest. Just before striking the floor, the ball has a momentum whose magnitude is 3.1 kg m/s. At what height was the ball dropped?An oatmeal cookie is dropped on the floor. Is this an inelastic collision? Why or why not? It is because the cookie and floor can be considered one object. It is because the cookie and floor are stuck together. It is not because there is not momentum involved. It is not because the cookie and floor do not move away together as a unit.
- Determine the unknown velocity value. Assume that the collisions occur in an isolated system."The fastest throw of a rugby ball was 48.0 mph (77.25 km/h) and was achieved by Joe Simpson (UK), a professional rugby player for London Wasps, in an event organized [...] in 2011" (source: Guinness World Records) At what speed must a 150-kg rugby player be moving to have the same momentum as the 450 g rugby ball recorded in the Guinness World Records?Answer: _____ Units:______Two balls of mass m and M are attached by strings of length L. The two balls are initially at rest at an angle θ, and are then released. The balls undergo a totally inelastic collision at the bottom of their swings. Assume that m = 1.7kg, M = 2.8kg, L = 0.80m and θ = 67o.a) Calculate the speed of the balls immediately after the totally inelastic collision.b) To what maximum angle do the conjoined balls rise after the collision?