As part of a physics experiment, you stand on a bathroom scale in an elevator. even though you actual weight 704 N, the scale reads 894 N. The elevator is accelerating upward, your apparent weight in the elevator is 894 N, the elevator's acceleration is 2.65 m/s^2. What is the downward acceleration of the elevator that is required so you feel weightless? If the elevator is moving up or down with a constant speed, you apparent weight is?

A skydiver weighing 203 lbf (including equipment) falls vertically downward from an altitude of 5000 ft and opens the parachute after 14 s of free fall. Assume that the force of air resistance, which is directed opposite to the velocity, is 0.77 |v| when the parachute is closed and 10 |v| when the parachute is open, where the velocity v is measured in ft/s. Use g = 32 ft/s². Round your answers to two decimal places. (a) Find the speed of the skydiver when the parachute opens. v(14) = i (b) Find the distance fallen before the parachute opens. x (14) = i ft ft/s (c) What is the limiting velocity after the parachute opens? UL = i ft/s

The coefficient of kinetic friction between this 29 kg box and the floor is 0.25 and the pushing force is 161 N at an angle of 19 degrees below the horizontal. What is the acceleration of the box in m/s2?

A person of weighing 0.83 kN rides in an elevator that has an upward acceleration of 0.8 m/s2. What is the magnitude of the force of the elevator floor on the person, in newtons?