27. Suppose a 1000 -kg car moves initially at 3m/s, then at 6m/s, then its change in velocity is (0.5 Points) [4 positive negative 28. Suppose a 1000 -kg car collides with a tree. Its speed changes from 6m/s to 0m/s. The impulse on the tree is (0.5 Points). [4 positive negative24. Suppose a 1000 -kg car collides with a tree. Its speed changes from 6m/s to 0m/s. The impuls on the car is (0.5 Points) [4 positive negative 25. A baseball catcher holds his arm straight out to catch a ball. The change in momentum on his glove is 5kgcdot m/s. The ball stops in 0.01 seconds.The initial speed of the ball is 30m/s. The force of impact is (1 Point) [4 3N 6N 150 N 500 NOnce a stream leaves the mountains, what happens to its speed? Why does this happen?A mechanical pencil has the density of 1.25g/cm^3 . The volume of the pencil is 15.8cm^3 . What is the mass of the pencil?The mass of toy spoon is 7.6 grams, and its volume 3.2 ml. What is the density of the toy spoon?PREV 333435363738394041 NEXT
