An airplane has a mass of 25 Mg and its engines develop a total thrust of 40 kN during take-off. If the drag D exerted on the plane has a magnitude D= 2.25 v2, where is expressed in meters per second and D in newtons, and if the plane becomes airborne at a speed of 240 km/h, determine the length of runway required for the plane to take off.

A space traveler weighs 800 N on earth. A planet having a mass of 5(10^25) kg and a diameter of 30(10^6) m orbits a distant star. Determine the weight W of the traveler on the surface of this planet.

The sports car has a mass of 4000 Kg, and while it is traveling at 35 m/s the driver causes it to accelerate at 7 m/s². If the drag resistance on the car due to the wind is F, = (1.3v) N, where v is the velocity in m/s, determine the power supplied to the engine at this instant. The engine has a running efficiency of e= 0.60. F,

A lady on a bicycle is going down a hill. If the initial slope angle θ1 = 5 and she has a constant speed with no braking or pedaling, determine the drag force asserted on bicycle tires by the ground (Assume the total mass for her and the bicycle is 70 kg and neglect air resistance). Question 2 options: F=35.93 N F=0.0483g N F=59.85 N F=0.0523mg N Note:- • Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. • Answer completely. • You will get up vote for sure.

Q13. As shown in the image below, the force acting on the 23-kg box is F = (C.s) N, where constant C = 2 and s is displacement in m. If the box has initial velocity of 1.2 m/s when s = 0, determine the power of force Fwhen s = 2.7 m. The ground is smooth. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper Sl unit. S | s Your Answer: Answer units F

6. An elevator has a mass of 4500 kg. and can carry maximum load 1800 kg. If the elevator moves up, it carries the maximum load, at a speed of 3.8 m/s. determine the power required for the elevator to maintain that speed.

A 4830-kg car enters an 7.6-percent downhill grade at a speed of 103 km/h. The driver applies her brakes to bring the car to a speed of 20 km/h in a distance of 0.49 km measured along the road. Calculate the energy loss Q (enter as a positive number) dissipated from the brakes in the form of heat. Neglect any friction losses from other causes such as air resistance. Answer: Q = i kJ

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Two particles has a mass of 8kg and 12kg respectively, if they are separated 800mm apart, determine the force of gravity acting between them. Compare the results with weight of each particles.