23. A 5.00 x 10°-kg rocket is accelerating straight up. Its engines produce 1.250 x 10' N of thrust, and air resistance is 4.50 x 10° N. What is the rocket's acceleration? Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion.

In the Simple Pendulum experiment, what kind of graph comes out if period is graphed versus the length of the chord? In the Simple Pendulum experiment, what kind of graph comes out if chord length versus period is graphed?

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

A student attaches a rope to a 32 kg box, and drags it to the left with constant velocity of 1.97 m/s. The tension in the rope is 207 N at an angle of 35.7° to the ground. How much does the box weigh? Find the x and y components of the applied (tension) force: Fx = N. %3D Fy = N. How much friction must be present? How much Normal force must be present? N.