Chapter 12, Problem 229P

5. A boat crosses a river. The river is flowing at 4 m/s. The boat starts at Point A and travels 6 m/s relative to the river, oriented perpendicular to the current. How far downstream will the boat have been carried when it reaches the opposite shore at Point B? VR = 4 m/s + Ax =? 75 m VB/R = 6 m/s A

4. On a day with heavy rainfall, when the roads were slippery, the two cars, A and B, collided at right angles at the intersection. During the collision, the cars became entangled (AB) and moved off together to bump to a huge old tree. Calculate the velocity (km/h) of car B just before collision with car A at the intersection. Right after bumping with the tree, determine the new velocity of the "entangled" cars. Also, compute for the percent energy lost from the cars after the two collisions occurred. Neglect the geometry of the cars before and after collision. Other details are tabulated below: Parameter Mass of car A, m₁ (kg) Mass of car B, mB (kg) Velocity of car A just before collision with car B, VA1 (km/h) Velocity of car B just before collision with car A, VB1 (km/h) Coefficient of restitution between cars A and B, CAB Coefficient of restitution between the entangled cars (AB) and the tree (C), eABC Value (with respect to your student number) 1290 1630 55, 1 unknown, → unknown…

A river steamer can travel at the rate of 15 mi/hr in still water. How long will the trip between two cities 60mi apart take if, a. It's going downstream where the current is 3mph b. It's going upstream where the current is 3mph c. What will be the average speed for the round trip?

When a cyclist is riding west at 20 Km/hr, he feels it is raining at an angle of 450 with thevertical. When he rides at 15km/hr, he feels it is raining at n angle of 300 with the vertical.What is the velocity of the rain?

1. A surge is moving at 9 f t/s into a basin of depth 1.4 f t where the speed is zero. Find the water depth behind the surge and the drift velocity behind the surge (that is, the velocity downstream of the surge in a stationary frame of reference). 2. A river of depth 2 m flows downstream at 1 m/s. A surge of depth H moves up the river at 5 m/s relative to a stationary observer on the bank of the river. Find H.  

A river flows due north with a velocity of 3kph. A man rows a boat across the river. His velocity relative to the water is 4kph due east. If the river is 1km wide, how long will it take him to cross the river?

David participates in a running competition of 950 m.he completes the first 450 m in 7 minutes and rest 500 m in 8 minutes.Calculate the average velocity of david.

A two-stage rocket is fired vertically from rest at s=0 with the acceleration as shown. After 30 s the first stage, A, burns out the seconds stage, B, ignites. Plot the v-t and s-t graphs which describe the motion of the second stage for 0t60 s.

NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A baseball pitching machine “throws” baseballs with a horizontal velocity v0v0 . Know that height h varies between 689 mm and 1119 mm.   Determine the range of values of v0v0 .   (You must provide an answer before moving on to the next part.)     The range of values of v0v0 is km/h ≤ v0v0 ≤ km/h. ?   Note: please show step by step solution. Hence, double check the solution. For correction purposes!. I require  handwritten working out please!. Kindly, please meticulously, check the image for conceptual understanding and for extra information purposes!. Also questions here I post, I receive wrong answers from them on a regular basis!!. Please go through the question and working out step by step when you finish them!!. Appreciate your time!.