Practice Problem: If the acceleration is 2.0 m/s² instead of 4.0 m/s. where is the cyclist, and how fast is he moving, 5.0 s after he passes the signpost if xo = 5.0 m and vox 15 m/s? Answers: 105 m, 25 m/s. =
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- Hi! Please answer this! Thank you so much:) 1. What is the displacement of a runner who joins a marathon if the race begins at a certain park, runs 42km, and finishes the race at the same location in the said park? Explain briefly. 2. One afternoon, a couple walks three-fourths of the wayaround a circular lake, the radius of which is 1.5 km.They start at the west side of the lake and head duesouth to begin with. (a) What is the distance theytraveled? (Cutnell and Johnson, 2012) (b) describe thecouple’s displacement as compared to the distancetraveled.Please provide complete solution. thanks! A race car accelerate from rest at a constant rate 2m/s2 in 15 seconds, It then travels at a constant speed for 20 seconds, and after that, it comes to a stop with an acceleration 2m/s2 (a) What is the total distance traveled by car? (b) What is its average velocity over the entire path?Ansewr this 2 part question using the equations I taught you. Part A A car, initially at rest, accelerates with an acceleration of 2.5m/s2 up to the speed limit of 30m/s, and then it maintains that speed for another 30s. How far, in total, did the car travel in this time? Part B A bus accelerates from rest to its top speed of 30m/s in 8s. How far did the bus go while speeding up?
- An object is released from rest at a height of h. During the final second of its fall, it traverses a distance of 38m. Determine h. I would like to know the solution but also maybe an explanation on how I would know what process to take. For the last second, I was able to find that final vf = 38m/s. That is vf = deltax/deltat, or 38m/1s. I plugged it in to vf2 = vo2 + 2a(deltax), since I think that vf shouldn't change for h, but I got the wrong answer. Please explain.This is a symbolic version of Problem 41. A river has a steady speed of vs. A student swims upstream a distance d and back to the starting point. (a) If the student can swim at a speed of v in still water, how much time tup does it take the student to swim upstream a distance d? Express the answer in terms of d, v, and vs. (b) Using the same variables, how much time tdown does it take to swim back downstream to the starting point? (c) Sum the answers found in parts (a) and (b) and show that the time ta required for the whole trip can be written as (d) How much time tb does the trip take in still water? (e) Which is larger, ta or tb? Is it always larger?This is a symbolic version of Problem 41. A river has a steady speed of vs . A student swims upstream a distance d and back to the starting point. (a) If the student can swim at a speed of v in still water, how much time t up does it take the student to swim upstream a distance d ? Express the answer in terms of d, v, and vs . (b) Using the same variables, how much time t down does it take to swim back downstream to the starting point? (c) Sum the answers found in parts (a) and (b) and show that the time t a required for the whole trip can be written as (d) How much time tb does the trip take in still water? (e) Which is larger, ta or tb? Is it always larger?
- 1. What is her maximum speed? 2. How far did she travel as she accelerated? 3. How long does she take to complete the entire race?Please help me solve this. Thank you III. The velocity-time graph of a particle in one dimension is shown in the figure. Assuming that the particle started at x0 = 0 m, what are the instantaneous position x(t) and velocity v(t) equations (in the form compliant with SI units) that correspond to the interval - from D to E? - from B to D? - from A to B? Roughly sketch the corresponding a-t and p-t ploots for the given v-t plot.Considering motion with a constant velocity: What happens to changes in distance during equal time interval? Is this what you would expect? 2. Considering motion with a non-constant velocity: What happens to changes in distance during equal time interval? Is this what you would expect?
- 1. A ball was dropped from a building and reached the ground in 4.00s. Show the equations that you use and all calculations. a) How much was the height of the building? b) How fast was it going when it hit the ground? c) How much is the acceleration of the ball? Give both magnitude and direction (up or down). ExplainA person toss a ball vertically upward in isolation with an initial movement of 15 m / s. It rose, then fell, and that person stopped it again, Gen 1. How high does the ball reach? 2. You captivated her at the previous moment, holding her? How long do you spend the ball in the air?5: Freight trains can produce only relatively small accelerations and decelerations. Part (a) What is the final velocity, in meters per second, of a freight train that accelerates at a rate of 0.055 m/s2 for 7.75 min, starting with an initial velocity of 4.6 m/s? Part (b) If the train can slow down at a rate of 0.525 m/s2, how long, in seconds, does it take to come to a stop from this velocity? Part (c) How far, in meters, does the train travel during the process described in part (a)? Part (d) How far, in meters, does the train travel during the process described in part (b)?