In: Physics
1. Compute the mechanical work done by the helicopter on lifting a 1,200-kg house to a
height of 800m. Show all your work.
2. What maximum speed (in miles per hour) can a 1,800-kg, 160-horse-power car theoretically develop moving up a 30-degree slope? Show all your work.
3. A boat of mass 720kg (including passengers) floats stationary on water before an 80-kg woman jumps into it horizontally at 5m/s. At what speed does the boat begin to move? Show all your work.