A toy car has a friction coefficient of 0.03. On a 30 degree incline starting from rest, how fast will the toy car be travelling after 2 seconds?
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A toy car has a friction coefficient of 0.03. On a 30 degree incline starting from rest, how fast will the toy car be travelling after 2 seconds?
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- A theme park is planning out a new free-fall ride. The drop is almost perfectly frictionless, with a distance of 190 meters. Assuming that the initial velocity was zero, what would be the speed at the bottom of the drop? 1 53 m/s 2 61 m/s 3 67 m/s 4 72 m/sA skier slides down a hill in a straight line. The hill is 60m high and the coefficient of kinetic friction between the snow and the skis is 0.1. The hill is at an angle of 10 degrees with the horizontal. The mass of the skier is 70 kg. If the skier starts her run from rest and air friction can be ignored, how fast is she moving at the bottom of the hill? Please answer in units of m/s.A brick of mass 1.00 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 2.18 m away? Ignore friction. m/s
- A man pushes an object to the right and exerts a force which has a horizontal compotent of F = 33 N. A horizontal frictional force has a magnitude of f = 15 N which opposed the horizontal component of the fushing force. The mass of the object is m = 31 kg. Write an expression for the magnitude of the acceleration of the object. If the object starts at rest what is the speed in meters per second at t = 2.00s? If the man stops pushing the object at t = 2.00s and the firctional force is constant what is the distance in meters does to object slide before coming to a rest?A car traveling at 35 m/s suddenly runs out of gas while driving up a 7° incline. How long will it take for the car to stop after it runs out of gas (if it doesn't use its brakes and there is no friction)? How far will it travel before it stops?A crate slides down a ramp. Once reaching the bottom of the ramp, the crate slides 15 m horizontally across the floor to a wall. The crate reaches the wall 2.5 s after leaving the ramp. If the ramp is at an elevation angle of 15°, how long is the ramp? Ignore friction.
- In 1992, a 14-kg meteorite struck a car in Peekskill, NY, leaving a 20-cm-deep dent in the trunk. If the meteorite was moving at 500 m/s before striking the car, what was the magnitude of its acceleration while stopping? Find the time it takes for the meteorite to come to a complete stop.A 55.0-kg lead ball is dropped from the Leaning Tower of Pisa. The tower is 55.0 m high. What is the speed of the ball after it has traveled 1.10 m downward?A car begins rolling down a hill that ends in a cliff. the car starts at rest 10m from the cliff and rolls without friction down an incline of 20 degrees. if the cliff is 60m high, how far from the base of the cliff does the car hit the ground
- A block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a friction force stops the block in a distance d. The block's initial speed v0 is 6.9 m/s, the height distance h is 1.1 m, and uk is 0.60. Determine d. Use g=9.8 m/s/s.Which of the following situations would result in a greatest impact force: a. the crash is head-on between two identical cars both moving at 30mph and b. the crash is head-on into a stationary brick wall with a velocity at 30mph? Explain why.Three youths push a 40.0-kg block of ice so that it begins to coast on a frozen lake. With an initial speed Vi of 3.00 m/s, the block of ice now moves up an icy ramp at the edge of the lake. Neglecting air resistance and in the absence of any friction between the ice block and the frozen lake and ramp, use the CMEP to calculate how high up the ramp (h in the figure) the block of ice moves before stopping. As a suggestion, use the base of the ramp as GZ. 0.204 m 0.625 m 0.459 m 0.511 m 0.165 m 0.270 m O O O