A skydiver of 75.0 kg mass has a terminal velocity of 60.0 m/s. At what speed is the resistive force on the skydiver half that when at terminal speed?

A 104 kg crate is sitting at the top of a ramp, which is inclined at an angle of 28 degrees with respect to the horizontal. What is the minimum value for the coefficient of static friction that allows the box to stay at rest at the top of the ramp?

You are pulling your luggage in an air port for an international flight. You know not to pack too much else they charge you extra fees so you weighted your luggage at home to be 22.0 kg. You exert a pull of 46 N in magnitude and at 24 degrees above the horizontal to ensure you can walk at a constant speed on the carpeted floor. What is the coefficient of friction between the caster wheels and the carpet?

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 965 N and the drag force has a magnitude of 1016 N. The mass of the sky diver is 98.5 kg. Take upward to be the positive direction. What is his acceleration, including sign?

You have 40 kg friend lying on a 60 degree slope who needs your help. You toss them a rope and hold on tight to keep them from falling. If the coefficient of friction between and the slope is 0.3, how hard must you hang on in order to keep your friend from moving?

A skydiver of mass 83.5 kg jumps from a slow-moving aircraft and reaches a terminal speed of 54.4 m/s. (a) What is her acceleration when her speed is 30.0 m/s? magnitude  m/s2 direction  ---Direction--- upward downward (b) What is the drag force on the skydiver when her speed is 54.4 m/s? magnitude  N direction  ---Direction--- upward downward (c) What is the drag force on the skydiver when her speed is 30.0 m/s? magnitude  N direction  ---Direction--- upward downward

A 102 kg crate is sitting at the top of a ramp, which is inclined at an angle of 27 degrees with respect to the horizontal. What is the minimum value for the coefficient of static friction that allows the box to stay at rest at the top of the ramp?