30.0 m

Fill in the blank: Calculate the work done by these forces. A 10.0 N force is applied to push a block across a friction free surface for a displacement of 5.00 m to the right. Work = (note that your answer must have three significant figures to be marked correct.) Fnorm-20 N Fapp=10 N %3D Fgrav =20 N

3) The meaning of the word "WORK" is quite different in physics from its everyday usage. Give an example of an action a person could do that "feels like work" but that does not involve any work as we've defined in this chapter. Support your reasoning with equations/data.

You are driving to work at 60 mph and need to accelerate to 75 mph. How long will it take to reach this speed? Express this quantity in units of seconds. Assume the engine is rated at 140 hp and is 25% efficient. The combined vehicle and driver mass is 2970 lbm.

. A box with a mass of 3.00 kg is pushed a distance of 2.0 m by a horizontal force of 12.0 N across a frictionless table. Determine the work done by: a) the applied force b) the normal force c) the force of gravity d) the net force on the block

How much power is required to lift a heavy solid concrete beam with mass 253.23 kg upward with a constant speed of 4.83 m/s using a crane?   P = ____ watts

A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the output power, in kW (kiloWatts)?  Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Question 2 3 pts 2. A workman carries some lumber up a staircase. The workman moves 9.6 m vertically and 22 m horizontally. If the lumber weighs 45 N, how much work was done by the workman? Edit View Insert Format Tools Table 12pt v Paragraph v |BIUA ev Tev O words

A 12 kg ball falls from height of 27. What willbe potential energy of the ball after 1 second? Use g = 9.8 m/s ^ 2 Calculate answer to one decimal

Please answer #21 with full solutions. Thank you! Analyze the problems carefully, then solve them. Be systematic when answering. Write the given, label them; the required; and all calculations pertinent to the problem. Express your numerical answers with the appropriate number of significant figures.