49. A mountain biker cycling a trail traveling at 5.4 m/s begins to slow down when she notices a wooden bridge ahead has flooded. If she begins braking when she is 15.0 m from the bridge and comes to a stop just before reaching the bridge, how long did it take her to stop? A 1.8 s B. 2.8 s C. 3.9 s D. 5.6 s

49. A mountain biker cycling a trail traveling at 5.4 m/s begins to slow down when she notices a wooden bridge ahead has flooded. If she begins braking when she is 15.0 m from the bridge and comes to a stop just before reaching the bridge, how long did it take her to stop? A 1.8 s B. 2.8 s C. 3.9 s D. 5.6 s

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter2: Representing Motion

Section: Chapter Questions

Problem 71A

See similar textbooks

Similar questions

By US law , vehicle speedometers are supposed to be accurate to with+\-2.5% . If a car speedometer read 40mph what is the fastest speed the car could be moving ? The slowest? Show your work and briefly explain how you did this in several bullets
What is the average velocity of this displacement time graph. My answer is 0.0833m/s because I am diving the final displacement of 2 metres by 24 seconds.Please keep in mind only use the whole number quanities in the graph such as in cooridinate- (7,4.5)
A diagram representing the motion of two cars is shown below. The number neareach dot indicates the clock reading in seconds when the car passes that location.(a) Indicate times when the cars have the same speed. (b) Indicate times whenthey have the same position. Explain your reasoning.
Based on a grade 11 physics student, answer the following question: The position-time graph below represents the motion of two speed skaters, Bill and Ted on their Excellent Adventure as they time travel back to the 1952 winter Olympics in Oslo. What was Ted’s velocity at 20s? What was Bill’s velocity during the middle portion of the race? What was Ted’s average velocity throughout the race? What was Ted’s acceleration through the race? (assume constant) Make a velocity-time graph of Bill & Ted’s Speed Skating race.
Use the worked example above to help you solve this problem. A race car starting from rest accelerates at a constant rate of 5.90 m/s2. What is the velocity of the car after it has traveled 1.10 102 ft?
Please helpppp explain I’m confusedddddd For each graph below, try to describe what type of motion (imagine yourself walk- ing along a path in front of a motion detector) would produce such a graph. Con- sider the horizontal axis to represent increments of time and the vertical axis to represent increments of distance from a frame of reference. Then write a detailed description of how you produced the graph. The description should be detailed enough that another group could follow your directions to reproduce the graph and should include such vocabulary as faster or slower rate, increasing function values, decreasing function values, and the function is constant on defined intervals Warning! Some of these graphs may not be functions, and thus do not make sense in a physical way related to motion.
A rock is dropped from a bridge to the water below. It takes 5.25 deconds for the rock to hit the water. What is the velocity of the rock as it hits the water in metres per second? How far from the water is the bridge (in units of metres to 3 decimal places)? State at the start of the problem which direction is positive (using the up arrow or down arrow) Make a list of all given values, units, and variables they represent. Write the general form of the equation you are going to use. Insert the known variables and solve.
Illustrate and solve the following problems following the GRESA format (Given, Required, Equation, Solution, Answer).Express your answer in two decimal places What is the final velocity of the car, if it starts from rest and travelled a 75.0 km distance with an acceleration of 17 m/s2?
Please answer the 3 unanswered questions. One is for velocity time graph, while other 2 are foracceleration time graph.
A car accelerates at 7 m/s2 for 14 seconds. The direction of its acceleration is due east (east = positive direction). If its initial velocity was 6 m/s, also due east, how far did it travel during the 6th second of its motion? Round your answer to one decimal.
Explain the motion in which the distance- time graph is parallel to the time axis?
Running pace Explain why if a runner completes a 6.2-mi(10-km) race in 32 min, then he must have been running at exactly11 mi/hr at least twice in the race. Assume the runner’s speed atthe finish line is zero.