| A | B |
|---|
| A child of mass 20.0 kg takes a ride on an irregularly curved water slide of height 2.00 m. If he starts from rest at the top, determine the speed of the child at the bottom, assuming no friction is present. | 6.26 m/s |
| A 755-N diver drops from a board 10.0 m above the water's surface. Find the diver's speed 5.00 m above the water's surface. Then find the diver's speed just before striking the water. | 9.91 m/s; 14.00 m/s |
| A 755-N diver leaves a diving board with an initial upward speed of 2.00 m/s. If the board is 10.0 m above the water, find the diver's speed when striking the water. | 14.15 m/s |
| An Olympic runner leaps over a hurdle. If the runner's initial speed is 2.2 m/s, how much will the runner's center of mass be raised during the jump? | 0.25 m |
| A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 1.9 m/s. What is the initial height of the bob? | 0.18 m |
| A child and sled with a combined mass of 50.0 kg slide down a frictionless hill that is 7.34 m high. If the sled starts from rest, what is its speed at the bottom of the hill? | 12.00 m/s |
| The largest apple ever grown had a mass of 1.47 kg. Suppose you hold such an apple in your hand. You accidentally drop the apple, then manage to catch it just before it hits the ground. If the speed of the apple at that moment is 5.42 m/s, from what height did you drop it? | 1.50 m |
| One species of eucalyptus tree grows to heights similar to those attained by California redwoods. Suppose a bird sitting on top of one specimen of eucalyptus tree drops a nut. If the speed of the falling nut at the moment it is 50.0 m above the ground is 42.7 m/s, how tall is the tree? | 142.93 m |
| In 1989, Michel Menin of France walked on a tight rope suspended under a balloon nearly at an altitude of 3150 m above the ground. Suppose a coin falls from Menin's pocket during his walk. How high above the ground is the coin when its speed is 60.0 m/s? | 2966.51 m |
| A plant falls from a windowsill 30 m above the ground. What is the speed of the plant when it passes a window 18 m above the ground? | 15.34 m/s |
| A skier starts from rest at the top of a frictionless incline of height 20.0 m. What is her speed at the bottom of the incline? | 19.81 m/s |
| A monkey in a tree drops a coconut from rest to the ground 7.5 m below. Determine the speed of the coconut just before it strikes the ground. | 12.13 m/s |
| With what speed does a hammer dropped from a height of 23 m strike the ground? Neglect air friction. | 21.24 m/s |
| A block of mass 0.80 kg rests on a horizontal, frictionless surface. The block is pressed against a light spring having a spring constant of 120 N/m. The spring is compressed a distance of 4 cm and released. What is the speed of the block the instant it loses contact with the spring? | 0.49 m/s |
| A spring is compressed 6 cm by a 0.4-kg mass and released. The speed of the mass as it loses contact with the spring is 2 m/s. What is the spring constant for the spring? | 444 N/m |
