A sled slides 100 m down a hill that slopes at an angle of 30° with the horizontal direction.
The sled attains a final velocity of 20 m s ' at the
base of the slope. What fraction of the energy was
lost due to friction'!​

Awalk up the phase change graph worksheet

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane