14.111. A 6000-kg dump truck has a 1500-kg stone block sitting in its bed when the operator accidentally raises the bed to an angle of 30. At this angle, the cables holding the block in place break, so the block slides down the bed and impacts the tailgate. Neglecting friction between the block and the bed and assuming the truck can roll freely, determine the speed of the truck and the block (a) immediately before the block hits the tailgate, (b) immediately after the block hits the tailgate. Assume a plastic impact. 14.111 A 6000-kg dump truck has a 1500-kg stone block sitting in its bed m when the operator accidently raises the bed to an angle of 30. At this angle, the cables holding the block in place break, so the block slides 30 down the bed and impacts the tailgate. Neglecting friction between the block and the bed and assuming the truck can roll freely, deter- mine the speed of the truck and the block (a) immediately before the block hits the tailgate, (b) immediately after the block hits the tail- Fig. P14.111 gate. Assume a plastic impact. Answers: A: va=0.832 m/s Vb=4.10 m/s B: va=vb=0 How do you get these