A rocket ascents into the air at an angle of 77 degrees. Assume that its 18,000 kg mass remains constant. If it produces a forward thrust of 250,000 N and feels 30,000 N of air resistance, what is the net force and acceleration of the rocket? Include a free body diagram of the rocket, with axes and angles labeled.

A 55.0 kg box is initially at rest on the flat floor. The coefficients of friction between the floor and the box are μk = 0.230 and μs = 0.540. You push the box horizontally, as shown in the picture below. (a) Draw a free body diagram of the box. (b) How much force would you have to apply to get the box to start moving? Give your answer in Newtons. (c) If the force of your push is 395 N, what is the resulting acceleration of the box? Give your answer in m/s2.

Consider the figure shown below. You are lowering two boxes,one on top of the other, down a ramp by pulling on a rope parallel to thesurface of the ramp. Both blocks move with a constant velocity of 15.0 [ m s]. The coefficient of kinetic friction between the ramp and the lower boxare 0.444 and the coefficient of static friction between the two boxes is0.800. a. Draw the Free-Body diagram of both blocks. Set the x-axis parallel tothe ramp. b. What are the magnitude and direction of the frictional force on the upper box? c. What is the magnitude of the applied force?

Superman is applying a 17,000 N horizontal force to try and stop a speeding locomotive.  This train has a mass of {9004} kg, it is on level, horizontal track, and gravity in Metropolis is 10 N/kg.  The train is originally travelling at 25 m/s, and the brakes have failed. (Friction force is zero).   Draw a Force Body Diagram of the train, labelling and calculating all forces. What is the acceleration of the train? How many seconds does it take for Superman to stop the train? How far does the train travel in that time?

5 kg and 15 kg blocks are superpositioned and in a rest position on a frictionless table. The coefficients of friction between the blocks are us = 0.4 and µk = 0.2. A horizontal force F = 90 N is applied to the lower block. Draw free-body diagrams and find the acceleration&direction of each block.

Consider the figure shown below. You are lowering two boxes,one on top of the other, down a ramp by pulling on a rope parallel to thesurface of the ramp. Both blocks move with a constant velocity of 15.0 [ m s]. The coefficient of kinetic friction between the ramp and the lower boxare 0.444 and the coefficient of static friction between the two boxes is0.800. a. Draw the Free-Body diagram of both blocks. Set the x-axis parallel tothe ramp. b. What are the magnitude and direction of the frictional force on the upper box? c. What is the magnitude of the applied force? d. Determine the angle at which the top block will start to slide downthe bottom block. Answer letter D ONLY pls

The coefficients of static and kinetic friction between a 387 N crate and the warehouse floor are 0.515 and 0.420, respectively. A worker gradually increases his horizontal push against this crate until it just begins to move and from then on maintains that same maximum push. What is the acceleration of the crate after it has begun to move? Start with a free-body diagram of the crate.

A clarinetist, setting out for a performance, grabs his 3.490 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 39.37 N. Find the case's vertical acceleration. Indicate an upward acceleration as positive and a downward one as negative. Use for ?=9.810 m/s2g for the acceleration due to gravity. vertical acceleration:

Same rocket as in the previous question. After the rocket has been in flight for a while, having burned and exhausted 80,000 kg of propellant, its acceleration has reached 25.0 m/s². All this while the thrust has been constant at 5.00 x 106 N. What is the magnitude of the drag force (that is, the resistance from the air) at this point? Note that at this point the rocket's altitude is still low, so you can still take gravity to be g = 9.81 m/s² O 1.18 x 106 N O 8.23 x 105 N O 5.00 x 106 N O 3.00 x 106 N

A clarinetist, setting out for a performance, grabs his 3.450 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 35.54 N. Find the case's vertical acceleration. Indicate an upward acceleration as positive and a downward one as negative. Use for g = 9.810 m/s² for the acceleration due to gravity. vertical acceleration: m/s