The box has a mass of 50 kg and is at rest. When it is pulled with 1000 N it reaches speed of 5m/s. how far will the box move? Neglect friction.

A helicopter with a mass of 10,000 kg takes off straight up at t=0. The thrust of the engine is defined given as a function of time: FT= 95 0.18t- (kN). Where t is in units of seconds. How fast is it rising and what is its elevation at t=4s?

The figure shows a system composed of two bodies, of masses mi and m2, connected through an ideal rope that passes through a pulley, also ideal. Both bodies are on two inclined planes, with the same angle of inclination 0, and coefficients of friction 1 and 2. If mi < m2, find the acceleration of the system. m₂

: A pilot in a fast jet aircraft loops the loop. The radius of the loop is 400 m, and the aircraft has a speed of 150 m/s when it passes through the bottom of the loop. What is the apparent weight that the pilot feels; in other words, what is the force with which she presses against her chair? Express the answer as a multiple of her normal weight

A mass of 10.4 tonnes is being hauled up an incline of 1 in 93 (rise in run). The frictional resistance is constant at 56 kg/tonne. At the instant the velocity of the mass is 15 km/hr, and its acceleration is 0.67 m/s2 :  Calculate the tension in the rope and calculate the power exerted.