1. A man is sitting on a train with a constant velocity of 10 m/s East. The man then stands up and walk backward with a velocity of 2 m/s. (a) Did the man's velocity with respect to the Earth change? (b) If the relative velocity of the man with respect to the Earth. yes, did it become faster or slower? (c) calculate

A pirate has buried his treasure on an island with five trees located at the points (30.0 m, 20.0 m), (60.0 m, 80.0 m), (10.0 m, 10.0 m), (40.0 m, 30.0 m), and (70.0 m, 60.0 m), all measured relative to some origin, as shown in Figure P1.69. His ships log instructs you to start at tree A and move toward tree B, but to cover only one-half the distance between A and B. Then move toward tree C, covering one-third the distance between your current location and C. Next move toward tree D, covering one-fourth the distance between where you are and D. Finally move toward tree E, covering one-fifth the distance between you and E, stop, and dig. (a) Assume you have correctly determined the order in which the pirate labeled the trees as A, B, C, D, and E as shown in the figure. What are the coordinates of the point where his treasure is buried? (b) What If? What if you do not really know the way the pirate labeled the trees? What would happen to the answer if you rearranged the order of the trees, for instance, to B (30 m, 20 m), A (60 m, 80 m), E (10 m, 10 m), C (40 m, 30 m), and D (70 m, 60 m)? State reasoning to show that the answer does not depend on the order in which the trees are labeled. Figure 1.69

A truck is traveling east at 80 km/h. At an intersection 32 km ahead, a car is traveling north at 50 km/h. (a) How long after this moment will the vehicles be closest to each other? (b) How far apart will they be at that point?

A projectile is thrown from the ground with a speed of 30 m·s−1 at an angle of 35◦from thehorizontal. Calculate the height of the projectile from the ground when its speed is 18 m·s−1.Ignore air resistance.

(e) Two boats leave the same port at the same time. One travels at a speed 10 mi/h in the direction S 12° W and the other travels at a speed of 20 mi/h in a direction S 72⁰ W. How far apart are the two boats after one hour?

(p) 6) A projectile is fired from ground level with a speed of 80 m/s at an angle 60° above the horizontal on an airless plane where g = 10.0 m/s2. What is the horizontal component of its velocity after 4.0 s?

If a ball is thrown vertically upwards with speed u, the distance covered during the last 't’ seconds of its ascent is :- 1 (В) (C) ut -et 1 (A) ut (D) (u + gt)t

The function s(t) = 64 – 16(t – 1) gives the height of a ball in feet for a - - given time t in seconds. When does the ball hit the ground?

A man walks at 5 km/hkm/h in the direction of a 20-km/hkm/h wind. Raindrops fall vertically at 8.2 km/hkm/h in still air. (Need help with this "TEST REVIEW" question)