Suppose that you have a mass of 100 kg. When you pull the rip cord and the parachute opens, the air resistance force on you increases drastically and equals 2000 N upward. The magnitude of the acceleration is ______ m/s/s

With detailed FBD.

A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 140.0 N at an angle of 17.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (a) Find the acceleration of the box. m/s² up the incline (b) The student now starts moving the box up a 10.0° incline, keeping her 140.0 N force directed at 17.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box? m/s² up the incline

A 75 kg skier was pushed up a slope of 21.0 degrees west with an inititial velocity of 4.0 m/s. After the inital push, it is not pushed further with the up-slope force. The kinetic coefficient of friction between the skis and the snow is 0.14 and the static coefficient is 0.19.  a) What is the acceleration (deceleration) of the skier after the push? b) If his initial velocity was 4.0 m/s, how far up the slope will he move before he stops?

A truck is driving forward with a 90 kg crate on the back. The coefficient of static friction between the crate and truck is µ-0.28. What is the fastest rate the truck could accelerate forward, in m/s², without the crate slipping off the back?

6. A skydiver of mass m = 60 kg leaps from a plane with an initial upward velocity of vo = +5 m/s. Assume the diver experiences air resistance proportional and opposite to their velocity, with drag coefficient b= 11 N/(m/s). Also assume acceleration due to gravity is g = 9.8 m/s². The velocity of the diver changes with time, as modelled by the following differential equation. m = -mg-bv dv dt Solve for u(t)= the velocity of the diver at time t, and determine the diver's terminal velocity: lim v(t) t-x

A 16276 kg helicopter moves upward with a constant acceleration from rest to a height of 493 m. The spinning blades create an upward thrust of 352370 N that lifts the helicopter into the air. How long does it take the helicopter to reach the height of 493 m? t = ________________________ s *Round to the nearest thousandth if necessary.

Three mass are arranged as shown. Mass A is 800 kg, Mass B is 400 kg, and Mass C is 600 kg. Draw a free body diagram for each mass. Find the net, vector force on each mass. A 8 m 90° В Mass A Mass B Mass C 12 m

A massive block is being pulled along a horizontal frictionless surface. The block must be A moving at a constant velocity B continuously changing direction C Moving with a continously increasing acceleration  D Moving with a constant nonzero acceleration