The 40-kg crate is projected along the floor with an initial speed of vo= 8.8 m/s at x = 0. The coefficient of kinetic friction is Uk - 0.45. Calculate the time t required for the crate to come to rest and the corresponding distance x traveled. VO S Hk Answers: t= i
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- A particle has initial velocity vo friction. At which second the particle has velocity v = 3i – 0.2j (m/s)? 3i + j (m/s). Assume that there is no airVf A bale of cardboard to be recycled thrown down an incline (0 = 25°) at A with a velocity of 1.30 m/s. The bale slides along the surface ABC to a conveyor belt that moves with a velocity of 1.75 m/s. The distance along the inclined surface is dab = 7.0 m and the flat surface dBc = - 5 m. The coefficient of kinetic friction is k 0.25 between the bale and all surfaces. 0 = B dBc Determine: (a) the speed of the bale at C (b) the distance the bale slides on the conveyor belt before it comes to rest relative to the belt. dAB T 1 Vi AA block is sent up an incline with a velocity of 3.51 m/s. Assume there is no friction between the incline and the block. The angle is at an incline of 31.1 degrees with the horizontal. A) How far up the incline does the block go? B) How long does it take to get there? C) What is it's speed when it gets back to the bottom?
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