Question

Show all work, neatly on worksheet. The only formula provided is wa-va-2a(r지). 1. A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 22.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective The car rolls from rest down the incline with a constant acceleration of 3.52 m/s? for a distance of 50.0 m to the edge of the cliff, which is 25.0 m above the ocean. (a) Find the cars position relative to the base of the cliff when the car lands in the ocean (b) Find the length of time the car is in the air. 2. A commuter airplane starts from an airport and takes the route shown in the figure below. The plane first flies to city A located 175 km away in a direction 30.0 north of east. Next, it flies for 150 km 20.0° west of north to city B. Finally, the plane flies 190 km due west, to city C. Find the location of city C relative to the location of the starting point: distance and angle of the final resultant vector, "R" as shown below (measure angle relative to countercdlockwise rotation relative to the positive x-axis). angle (km 110 Os0 100 150 200 3. A 146 N bird feeder is supported by three cables as shown below. Find the tension in each cable CA N To =.11 2.92-N Te 4. Two blocks each of mass m = 3.80 kg are fastened to the top of an elevator as in the figure below. (a) If the elevator accelerates upward at 1.6 m/s', find the tensions T, and T2 in the upper and lower strings. (b) If the strings can withstand a maximum tension of 97.0 N, what maximum acceleration can the elevator have before the first string breaks?

Answer 1