After narrowly escaping the crocodile, you follow the river on foot. Later, you see a deer heading into the water (m = 50kg, vi = 3 m/s West) and the same giant crocodile (m = 180 kg) leaps from the water to attack! If the crocodile leaps from the water with vi = 8 m/s East and the two collide inelastically, what is their final velocity? Include direction in your answer! PSA: this is for physics on the subject of momentum

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j. b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.