Conveyor belts are often used to move packages around warehouses. The conveyor shown below moves packages at a steady 4. 0 m/s. A 500 n employee decides to catch a ride by sitting on a 1,000 n box for a 50 m trip as shown below:.

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.