When the driver applies the brakes of a light truck traveling 30 km/h, it skids 140 m before stopping. How far will the truck skid if it is traveling 45 km/h when the brakes are applied?

The Skier starts from rest at point A. Determine the horizontal distance X traveled after he leaves the ramp and the landing speed. Neglect friction. The Skier starts from rest at point A. Determine the horizontal distance traveled after he leaves the ramp and the landing speed. Neglect friction. X=10.2 m, vc=24.2 ms   X=7.81 m, vc=18.1 ms     X=13.1 m, vc=24.9 ms     X=8.96 m, vc=−21.2 ms

A load is being lifted by the pully system shown below. If the end of the rope at point A isbeing pulled down with a speed of ?A = ?2 m/s, determine the speed of the load being lifted at C when t = 5s.

A cyclist is rounding a curve having a radius of curvature of 15 m. The coefficient of friction between the road surface and tire is µ= 0.5. Determine the maximum speed possible without encountering slip. Hint: use the path coordinates and assume that all the cyclist/ground interaction force is in the normal direction.

A train which is traveling at 75 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreased velocity is observed to be 55 mi/hr as it passes a point 1/2 mi beyond A. A car moving at 50 mi/hr passes point B at the same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver "steps on the gas." Calculate the constant acceleration a that the car must have in order to beat the train to the crossing by 3.3 sec and find the velocity v of the car as it reaches the crossing. Tw Answers: a = i V = i Train 75 mi/hr 1.0 mi 1.1 mil B Car 50 mi/hr ft/sec² mi/hr

Problem #2 For a short period of time, the frictional driving force acting on the wheels of the 2.5-Mg van is Fc = (500t) N, where t is in seconds. If the van has a speed of 15 km/h when t= 0, determine its speed when t = 6s. FD

A worker develops a tension T in the cable as he attempts to move the 54-kg cart up the 18° incline. Determine the resulting acceleration a of the cart if (a) T = 142 N and (b) T = 208 N. Neglect all friction, except that at the worker's feet. The acceleration a is positive if up the slope, negative if down the slope. T 54 kg 11° m/s² 18° Answers: (a) T = 142 N, a = (b) T = 208 N, a = i i m/s²