A 5.80-kg howler monkey is swinging due east on a vine. It overtakes and grabs onto a 6.80-kg monkey also moving east on a second vine. The first monkey is moving at 11.8 m/s at the instant it grabs the second, which is moving at 7.80 m/s. 1) After they join on the same vine, what is their common speed

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.