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- If a 2.1 kg object is initially at rest on a frictionless, horizontal surface and subjected to a 13.7 N force in the positive x-direction over a distance of 3.49 meters, what will the object's final speed be? Assume the answer in in m/s.F(x) A 8kg block initially at rest is acted on by the force shown at an angle of 0 = 20'. The magnitude of this force changes as the block 4. moves: F(x) = (7.5 N/m)x. The coefficient of kinetic friction between the floor and the box is µ = 0.2. Determine the speed of the block after the block has moved 5.0m.A youngster with mass m falls from a height h into the trampoline's centre, plunging to a depth y before being bounced upward. What is their maximum height?
- Suppose your car approches a hill and has an intial speed of 106 km/h at the bottom of the hill. The driver takes her foot off the gas pedal and allows the car to cost up hill. the mass of the car is 740 kg and it stops at height 21 m above the starting point. What is the magnitutde of the average force of friction, in newtons, if the hill has as slope 2.2 degrees above the horizontalA contestant in a winter sporting event pushes a 49 kg block of ice at an angle 25∘ below the positive direction across a frozen lake, as shown in the figure. Assume the coefficients of static and kinetic friction are μs=0.1 and μk=0.03Calculate the minimum force Fmin he must exert to get the block sliding across the ice in newtons. What is its acceleration in meters per second squared once it starts to move, if that minimum force is maintained?A car of mass 1650 kg is proceeding along a straight, level roat at 16m/s. The speed limit changes and the car accelerates for 7.5 seconds to a velocity of 48m/s. Find the net force propelling the car