4. Billy Bob Joe is trying to save his crates full of bananas that are in danger of falling over a cliff. He pulls on one of the crates with a rope, applying a force P as shown. He is quite strong, so he is able to pull the crates to safety, so that the whole system is accelerating to safety. a. Write the equation of motion for every object in this system. Your final equations should only have P, m₁, M2, M3, M4, G, T1, T2, T3, μk, and 0 in them. Box each equation. b. Solve for the acceleration of the crates in terms of only P, m₁, m2, m3, m4, g, μk, and 0.

2. A jet plane has a takeoff speed of vtakeoff = 73 m/s and can move along the runway at an average acceleration of 2.4 m/s2. The runway is 1.2 km. Write out the 3 Kinetic equations. a. b. Write out the values of initial position, initial velocity, and acceleration. How many seconds will it take for the plane to reach takeoff speed? с. d. How far will the plane have to travel to get to takeoff speed? will the plane be able to get to take off before it gets to the end of the runway? е.

1. A rocket has an initial displacement of 1867 meters from the launchpad. It is moving with a velocity of 26 meters per second^2. What is it's displacement and velocity at t=200 seconds? 2. If this rocket has a jerk of 1 meter per second^3, then what is it's displacement at t=200 seconds? 3. If the rocket were traveling at an elevation angle (i.e., 0 degrees is horizontal and 90 degrees is vertical) of 30 degrees, then what is its horizontal displacement and its vertical displacement in meters?

A round with a mass of m= 11.5 g is shot out of a rifle that has length L= 1.14 m. The round spends t= 0.14 s in the barrel. a. Write an expression, in terms of the given quantities, for the magnitude of the rounds acceleration, a, as it travels through the rifles barrel. You may assume that acceleration is constant throughout the motion. b. Calculate the numerical value for the magnitude of the rounds acceleration, a in m/s square. c. What is the numerical value of the net force F NET in Newton’s acting in the round?

The answer for this problem would be "C" but could you explain me why? The reason for this is to understand this kind of problems in the future not only this one.

A steel cable lying flat on the floor drags a 20 kg block across a horizontal, frictionless floor. A 110 N force applied to the cable causes the block to reach a speed of 3.9 m/s in a distance of 2.0 m. What is the mass of the cable? Express your answer with the appropriate units. m= Submit μA Value Units ? Units input for part A Previous Answers Request Answer