#1 #2 #3 #4 #5 #6 #7 A helicopter moves 55 km at 30 north of east, then it makes turn to north and moves 35 km a) Sketch a diagram showing displacements for the both legs b) Find the magnitude of the total displacement c) Find the direction of the nal displacement A bullet is red horizontally with the speed of 240 m/s from a window which is 25.5 m above the ground. In . l .50 s the bullet hits a tree. Neglecting air resistance, nd: a). the velocity (magnitude and direction) of the bullet at the time of the hit; b). the horizontal distance traveled by the bullet; c.) the height on which the bullet hits the tree. When the horizontal force of 13.5 N is applied to a block of mass 2.55 kg, the block moves with a constant speed of 0.50 m/s along the oor. a) Sketch a free body-diagram, b) Determine the force of friction acting on the block 0) Find the magnitude of the normal force. A person steps on an escalator that moves from 1S1 to the 2\"d oor with the velocity of 0.50 m/s at the angle of 25 with respect to the ground. a) Find the horizontal and vertical components of the person's velocity. b) What is the vertical distance between the oors if it takes 16 s for the person to get om the lSt to the 2"d oor? A baseball with the mass of 150. g is released from a roof of a 78.5 In building. a) Determine the average acceleration of the baseball if the average force of air resistance is 0.165 N. b) Estimate the time of the fall A 255 g iron ball is rolled down an inclined plane that makes the angle of 22.50 with horizontal. If the ball is originally placed stationary on the height of 3.25 ft, determine the speed of the ball when it reaches the ground level. A 9.20 kg bucket with water is pulled out our a 10.5 m well by a rope in which there is 93.5 N tension. a) Find the acceleration of the bucket (magnitude and direction). b) Find the time it requires for the bucket to reach the ground level. (Assume that initially the bucket is stationary)