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- please fastA cat kicks a 0.43 kg chees block that was initially at rest. the net force is 20. What is the cheeses speed at t= 20 msThe 20-kg block is subjected to the forces shown. Motion occurs to the right. In case (b) shown in (Figure 2) determine the speed of the block at s=6 m if v= 3 m/s at s= 0.
- The energy needed to increase the speed of a certain car from 22 m/s to 44 m/s is 240 kJ. At what speed is the car is kinetic energy equal to 240 kJ? Marisa pushes a 1.635 kg book across a table, accelerating it at a rate of 2.099 m/s^2 over a time period of 1.891 s. If 2.760 watts of power were used to move the book, what distance does the book travel across the table?Mac lifts a barbell up over his head the length of his arms. The barbell has a mass of 35 kg. If the length of his arms is relative to his shoulders is 71 cm, how much power does will Mac generate in lifting the barbell in 3 seconds?
- Move over Jeff Bezos, this invention is about to make you the richest person in the world. You have just invented the OyOy (that's YoYo spelled backwards). It is the very latest in home safety and so easy to use! If your building is on fire, simply reach out and grab the cord on the Oyoy and you will be lowered safely toward the ground at a low velocity. The OyOy has a total mass M = 106.0 kg and is shaped like a cylinder of radius R = 0.835 meters. The secret to the operation of the OyOy is its patented shaft whose radius is only r = 0.0830 meters. The cord is wound around the small shaft and this is the secret to your low velocity. Outer Radius = R Spindle Radius = r Mass = M The FORMULA for the moment of Inertia: I = V(y=0)=? We will use the approximation that the shaft is of negligible mass compared to the total. This means that you can treat the entire OyOy as though it is a solid cylinder with mass M and radius R. Imagine that a customer of mass m = 77.5 kg is using the Oyoy and…You push a 12 kg block with a force of 32 N for a distance of 4.1 m How much kinetic energy (in J) has the block gained?Hide 42 Smarter Marks :: Sitti smartermarks.com 10. A model rocket is launched vertically. When its engine stops burning, it has a velocity of 110 m/s upward. Ignoring air drag, the rocket will travel a distance of m further before reaching its maximum height. (Record your answer in the numerical-response section below.) Your answer: 0000 11. A toy snowmobile has a mass of 21.0 kg and a velocity of 94.0 m/s directed at 10.0° N of E. The component of the snowmobile's momentum in the North direction is kg-m/s. (Record your answer in the numerical-response section below.) Your answer: 0000 Use the following information to answer the next three questions Object 1 with a mass of 4.80 kg, moving right at a speed of 8.60 m/s along a frictionless surface, collides head-on with Object 2 with a mass of 3.70 kg moving left at a speed of 10.8 m/s. After the collision, the Object 1 is moving left at 2.20 m/s. 12. The final speed of object 2 would be m/s. Answer to 3 sig digs. (Record your answer in…