10. For the Atwood's machine shown. Initially mass m2 is moving upward with initial velocity 0.74 m/s. Solve this using the work and energy equation. a) How fast is the system moving just before mass m2 hits the ground h = 0.34 m below its starting point? (Note: it goes up, then back down again. Assume neither mass hits the pulley; assume mi does not hit the ground.) b) What is the kinetic energy of the system just before mass m2 hits the ground? %3D

Q: 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.60 g Ping-Pong ball move so that the two…

A:

Q: A 7.0 kg bowling ball moves at 2.50 m/s. How fast must a 2.60 g Ping-Pong ball move so that the two…

A: The kinetic energy of the bowling ball is

Q: Calculate the kinetic energy of a 0.300 kg baseball thrown at a velocity of 34 m/s. 173 J 390 J 490…

A: Given data: Mass (m) = 0.300 kg Velocity (v) = 34 m/s Required: Kinetic energy (KE)

Q: A 7.0 kg bowling ball moves at 2.25 m/s. How fast must a 3.00 g Ping-Pong ball move so that the two…

A: Given information:Mass of the bowling ball (mb) = 7.0 kgMass of the ping pong ball (mp) = 3.00 g =…

Q: A knight has an idea to break into a fortress by knocking a wall down with a rolling boulder. The…

A:

Q: What is the kinetic energy of a 22.4 g ball moving at 35.3 m/s? Report your answer with the correct…

A: mass of ball , m = 22.4 gvelocity of ball ,v=35.3 m/s

Q: (d) particle. What is the maximum possible magnitude of the energy transferred? Starting from t = 10…

A:

Q: A car engine produces a constant power of P = 340 hp. The car and motor have a combined mass of m =…

A: Given value--- A car engine produces a constant power of P = 340 hp. The car and motor have a…

Q: A cat's crinkle ball toy of mass 15 g is thrown straight up with an initial speed of 3 m/s. Assume…

A: Given: m=15gmm=0.015kgu=3m/s

Q: A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.20 g Ping-Pong ball move so that the two…

A: Using the formula of kinetic energy, the kinetic energy of the bowling ball is:

Q: A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.80 g Ping-Pong ball move so that the two…

A: mass of bowling ball, M = 7 kg  velocity of ball, v =2.35 m/s  mass of ping pong ball, m =  2.8 g

Q: A truck travelling at a speed of 50 km/h has a kinetic energy of 600 KJ. If the speed of the truck…

A: Required : The kinetic energy of the truck.

Q: A mother (mass 60.0 kg) skates across an ice rink with negligible friction toward her child (mass…

A: Mass of the mother is M = 60 kg Mass of the sun is m = 20 kg Speed of the mother is u = 4 m/s

Q: EK Eg (J) ET (J) (J) t(s) t(s) t(s)

A: So, the situation is given and the graphs are given in the blank format, we have to draw graph…

Q: - Who did more work? Explain

A: Solution : Work done (W) via Force (F) is equal to the change in Kinetic Energy (K.E) W = ∆K.E  W =…

Q: A 7.0 kg bowling ball me m/s

A: Given data as per questionMass of bowling ball, mb=7 kgspeed of bowling ball, vb=2 m/sMass of…

Q: How fast (in meters per second) must an iron ball with a mass of 42.2 g be traveling in order to…

A: Given,Mass of the iron ball, m = 42.2 gKinetic energy of the ball, KE = 12.49 J

Q: Consider the net work required to stop a moving object. a. What is the net work, in joules,…

A: Given data:  Mass (m) = 60.4 kg Initial velocity (u) = 1.96 m/s Final velocity (v) = 0 m/s Required:…

Q: calculate the equation of motion for the system:

A: Given: Equation of energy of a system as 12mx·2+12kx2=∫0tFdxdtdt-∫0tbdxdtdxdtdt Note: dxdt=x·…

Q: A knight has an idea to break into a fortress by knocking a wall down with a rolling boulder. The…

A:

Q: A 66.8 kg body has 4.5 times the kinetic energy of 83.5 kg body. Calculate the ratio of the speeds…

A: Given data:  Mass (m1) = 66.8 kg Mass (m2) = 83.5 kg KE1 = 4.5×KE2 Required: The ratio of the speeds…

Q: 17. A 10.0-kg rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of…

A:

Q: Shey leads South’s varsity softball team in hitting. In a game against New Greer Academy this past…

A:

Q: The loaded cab of an elevator has a mass of 3.60 × 103 kg and moves 220. m up the shaft in 20.0 s at…

A: Given Mass = m = 3.60 × 103 kg Distance moved = s = 220 m We have to calculate rate of work done on…

Q: A Ferris wheel is a vertical, circular amusement ride with radius, R = 5 m. Riders sit on seats that…

A: We will first write an expression for work in terms of force and displacement. We then apply this to…

Q: Consider the net work required to stop a moving object. a. What is the net work, in joules,…

A:

Q: 10. A 3.0 kg toy falls from a height of 1.0 m. What will the kinetic energy of the toy be just…

A: Given data *The mass of the toy is m = 3.0 kg *The given height is h = 1.0 m *The acceleration due…

Q: Q39. How fast should a person of mass 50 kg run so that his kinetic energy is 625 J? O 5 Km/s O 5…

A:

Q: 0.8 0.6 0.4 0.2 0.25 0.50 0.75 1.00 Position, x (m) Force, F (N)

A: mass =  1.3 kg speed = 0.35 m/s at 0.27 m

Q: Box 1 (with mass m = 8.4 kg) is on a frictionless table moving with a velocity vo = 6.7 m/s. It…

A: Here Mass of box 1 = mass of box 2 = m =  8.4 kgInitial velocity of box1 = u1 = 6.7 m/sInitial…

Q: If R = 22.2 cm, M = 552 g, and m = 191 g in the figure, find the speed of the block after it has…

A:

Q: 84. Boxes A and B in Figure P10.84 have masses of 12.0 kg and 4.0 kg, respectively. The two boxes…

A: Given: The mass of box A is 12 kg. The mass of the block B is 4 kg. The initial speed of the boxes…

Q: A 55 kg snowboarder begins his run at the top of a 50.0 m tall hill with a speed of 0.5 m/s. What is…

A: (given) Mass of snowboarder = 55 kg Speed vi at the top of the hill = 0.5 m/s…

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.