7. The number of times a machine increases an input force is
a. mechanical advantage
b. efficiency
c. equal to the frictional force
d. the net force

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

The applied force of 3 washers will increase the applied force on the car to n.