Suppose a 112 kg cart traveling 12 m/s hits and sticks to (non-moving) carr with mass of 98 kg. how fast in (m/s) will the two cars be going am instant after they hit?

a) 1.14 b) 6.4 c) 9.8 d) 5.11

state formula used to solve as well

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Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.