A runner’s velocity along a straight track is 3.2 m/s at time 8.0 s and 2.2 m/s at time 11 s. Find the runner’s average acceleration during this time interval
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Trig/PreCalc...
Please help me with this. The finishing time for a runner completing the 200meter dash is affected by the tailwind speed, s. The change, t, in a runner's performance is modeled by the function shown below: t= 0.0119s^2  0.308s  0.0003 Predict the

Physical science
A runner at a track meet completes exactly one lap around a 400 m track What’s the distance and The displacement

phyics
Suppose a runner completes one lap around a 400m track in a time of 50 s. Calculate the average velocity of the runner. Express your answer in meters per second to the nearest integer.

science
after 30s, a runner is spriting at 3m/s. But, 10s later, the runner is sprinting at 3.8m/s. What is the runner's acceleration during this time?

Physics
Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 9. km/h due east. Runner B is initially 5.0 km east of the flagpole and is running with a constant velocity of 8.0 km/h due west. How far are the runners from the

calculus
Two runners, A and B run on a straight race track for 0

physics
A runner circles a track of radius 50 m in 50 s moving at a constant rate. If the runner was initially moving north, what has been the runner's average acceleration when halfway around the track?

Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 m in diameter. Find the x component of this runner's average velocity between points A and B. (answer is 3.44 m/s) Find the y component of this runner's average

Math
When a marathon runner completes 3 round around a circular track he covers a distance of 66 km.find the radius of track.

Physics
A runner is jogging in a straight line at a steady vr= 2.2 km/hr. When the runner is L= 4 km from the ﬁnish line, a bird begins ﬂying straight from the runner to the ﬁnish line at vb= 6.6 km/hr (3 times as fast as the runner). When the bird reaches

physics
Assume a canister in a straight tube moves with a constant acceleration of 3 m/s2 and has a velocity of 13.5 m/s at t = 0.00 s. (a) What is its velocity at t = 1.00 s? v = m/s (b) What is its velocity at t = 2.00 s? v = m/s (c) What is its velocity at t =

Urgent physics help
1. A runner starts at rest and accelerates uniformly at a rate of 0.85 m/s2 . What is the runner’s velocity after the runner has traveled 6.0 m? A. 2.3 m/s B. 3.2 m/s C. 5.1 m/s D. 10.2 m/s 2. An official drag race in the United States is usually 1/4

Physics
Runner 1 is standing still on a straight running track. Runner 2 passes him, running with a constant speed of 1.5 m/s. Just as runner 2 passes, runner 1 accelerates with a constant acceleration of 0.73 m/s^2. How far down the track does runner 1 catch up

Physics
A track athlete runs exactly one complete lap of the track, 400 m circumfrence, in 4.02x10^1 seconds. What is the velocity of the athlete , to two significant figures, if they are assumed to run with a constant velocity for the entire time?

physics
An 18yearold runner can complete a 10.0 km course with an average speed of 4.51 m/s. A 50yearold runner can cover the same distance with an average speed of 4.31 m/s. How much later (in seconds) should the younger runner start in order to finish the

Physics
An 18yearold runner can complete a 10.0km course with an average speed of 4.48 m/s. A 50yearold runner can cover the same distance with an average speed of 4.18 m/s. How much later should the younger runner start in order to finish the course at the

maths
the inside perimeter of a running track shown in figure is 400m the lenghth of each of the straight portion is 90, and the ends are semicircles, if the track is 14 m wide everywherwe,find the area of the track. also find the length of thee outerboundary of

physics
A runner covers one lap of a circular track 40.0 m in diameter in 62.5 s. Suppose initially the runner starts by going in the north direction. Assume the speed is constant for the first halflap and then constant for the 2nd halflap. Suppose instead the

physics
1.Moving with uniform acceleration a body covers 150m during 10sec so thet it covers 24m during the 10th sec .What is the initial velocity and the acceleration of the body. 2.A runner travels 1.5 laps around a circular track of 50sec .The diameter of the

physics
for starting from rest and moving in a straight line,runner achieves a velocity of 7m/s in a time of 2 seconds .what is the average acceleration of the runer.

Physics
Q1: A runner is jogging in a straight line at a steady vr= 6.8 km/hr. When the runner is L= 2.4 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 13.6 km/hr (2 times as fast as the runner). When the bird

physics
Suppose runner A starts at the 0 degree mark on a circular track (circumference = 400m). And let runner B start at the 180 degree mark. If runner A starts running counter clockwise with acceleration 2m/s^2, and runner B runs clockwise with constant speed

MATH
A runner sprints around a circular track of radius 100m at a constant speed of 7 m/s. The runner’s friend is standing at a distance 200m from the center of the track. How fast is the distance between the friends changing when the distance between them is

Calculus
A runner sprints around a circular track of radius 150 m at a constant speed of 7 m/s. The runner's friend is standing at a distance 300 m from the center of the track. How fast is the distance between the friends changing when the distance between them is

Math
Runner A crosses the starting line of a marathon and runs at an average pace of 5.6 miles per hour. Half an hour later, Runner B crosses the starting line and runs at an average rate of 6.4 miles per hour. If the length of the marathon is 26.2 miles, which

physics
A race car traveling northward on a straight, level track at a constant speed travels 0.750km in 20.0s. The return trip over the same track is made in 25.0s. What is the average velocity of the car in m/s for the first leg of the run? What is the average

physics please HELP !
Which situations are examples of a particle with a nonzero acceleration? (Select all that are true for full credit.) a)A car driving around a circular track at constant speed. b)A child going back and forth on a swing c)A runner moving in a straight line

physics
A runner’s velocity along a straight track is 3.2 m/s at time 8.0 s and 2.2 m/s at time 11 s. Find the runner’s average acceleration during this time interval.

Physics
A runner’s velocity along a straight track is 3.2 m/s at time 5.0 s and 2.2 m/s at time 13 s. Find the runner’s average acceleration during this time interval.

Physics
During a rElay race along a straight ROAD the 1st runner on a three person team runs D1 with a constant velocity v1. The runner then hands off the baton to the sEcond runner who runs d2 with a constant vElocity v2. The batton is then passed to the 3rd

Physics
A runner completes an 850m race with two laps of the 425m track in the xy plane centered at the origin in 1 mins, 50.6s . A runner rounds the track counterclockwise starting at the point (67.6 , 0). Find the runner's average velocity for the race. Find

Physics
A relay race is run along a straight line track 300.0 m long running south to north. 1st runner  starts at the South end of the track and passes the baton to a teammate at the north end of the track. 2nd runner  races back to the start line and passes

physics
A runner is moving at a constant speed of 8.00 m/s around a circular track. If the distance from the runner to the center of the track is 28.2 m, what is the centripetal acceleration of the runner?

Physics
A runner is jogging in a straight line at a steady vr= 8.2 km/hr. When the runner is L= 4.4 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 49.2 km/hr (6 times as fast as the runner). When the birdWhat

Physics
A runner follows a straight line path. He reaches the 100m mark with a velocity of 2.29m/s, then slows down steadily (0.0700m/s^2) until he reaches a velocity of (0.50m/s). What is the displacement of the runner?

Physics
A running track consists of two straight 88.5m segments and two semicircles of radius 39.0m The distance a runner travels in one complete lap I calculated to be 422 m. How do you find the displacement in x.y of a runner who covers half a lap?

Physics
A runner is jogging in a straight line at a steady vr= 5 km/hr. When the runner is L= 7.1 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 15 km/hr (3 times as fast as the runner). When the bird reaches the

Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 . in diameter. Find the x component of this runner's average velocity between points A and B. GOT THIS!!! 3.4 m/s Find the y component of this runner's average

physic
Suppose a runner completes one lap around a 400m track in a time of 50 s. Calculate the average speed of the runner. please explain process

physics
One of the standard tracks used in athletic events is a 400m loop. This track consists of two straight sections joined by semicircular sections and one lap of the track in the inside lane is exactly 400 m. (a) What is the displacement of a runner in the

Physics
A runner is jogging in a straight line at a steady vr= 3.1 km/hr. When the runner is L= 6.1 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 18.6 km/hr (6 times as fast as the runner). When the bird reaches

Physics
A runner is jogging in a straight line at a steady vr= 2.1 km/hr. When the runner is L= 4.4 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 10.5 km/hr (5 times as fast as the runner). When the bird reaches

science
A jogger jogs around a circular track with a diameter of 330 meters in 31 minutes. What was the runner's average speed? What was the runner's average velocity

Physics
I am given a velocity versus time graph for a runner. For it, I had to figure out the average velocity for the entire 16 s interval (for this, I got 2 m/s). Now they want me to find the displacement of the runner in the first 15.4 s. I know that it must be

Biomechanics
A runner does 1.5 laps around a 400‐m track in 77s. What is his average velocity? isn't the formulas for ave velocity is displacement/time. When I plug number is different from the Professor Answers. My professor answer is 2.6 m/s. Please help me to

Physics
A runner follows a straight line path. He reaches the 100m mark (xₒ = 100m) with a velocity of 2.29m/s, then slows down steadily (a = 0.700m/s^2) until he reaches a velocity of 0.500m/s. What is the displacement of the runner?

algebra (motion)
Runners A and B practice in a round track going in opposite directions. Runner A takes 40 minutes to go once around the track. The two begin at the same time and meet every 15 minutes. How long does B take to go once around the track?

Physics
Each of two runners at either end of a 1907 m straight track jogs toward the other at a constant 4.00 m/s. Suppose that a fly were to go back and forth, essentially without a pause, from one runner to the other at an average speed of 13 m/s. How far will

Physics
A runner is jogging in a straight line at a steady vr =5 km/hr.When the runner is L= 6.2 km from the finish line, a bird begins flying straight from the runner to the finish line at vb=15 km/hr (3 times as fast as the runner). When the bird reaches the

Maths
Three runners run a 10 metre race. Each runner runs according to the following rules: Runner 1: s = 2.4 + 0.75t Runner 2: s = 0.2t(t  5.1) Runner 3: s = 0.2t(t  5.1)(t  9.1) Where displacement (s) is in metres and time (t) is in minutes. Calculate for

advanced math
A runner is jogging in a straight line at a steady vr= 2.2 km/hr. When the runner is L= 4 km from the ﬁnish line, a bird begins ﬂying straight from the runner to the ﬁnish line at vb= 6.6 km/hr (3 times as fast as the runner). When the bird reaches

Physics
An athlete starts at point and runs at a constant speed of 5.40 around a round track 250 in diameter Find the component of this runner's average velocity between points A and B. Find the component of this runner's average velocity between points A and B.

Physics
Consider a circular track with a radius of 200 meters. A runner starts on the east side and runs around the track to a point diametrically opposite her starting point. What is the magnitude of her displacement? 400m She then runs the rest of the way

Physics
A runner is jogging in a straight line at a steady vr= 6.8 km/hr. When the runner is L= 2.2 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 20.4 km/hr (3 times as fast as the runner). When the bird reaches

physics
A runner traveling with an initial velocity of 3.0 m/s accelerates at a constant rate of 1.7 m/s2 for a time of 3 seconds. What distance does the runner cover during this process?

physics
A runner is jogging in a straight line at a steady vr= 7.5 km/hr. When the runner is L= 6.3 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 22.5 km/hr (3 times as fast as the runner). When the bird reaches

Physics
A runner of mass 51.5 kg starts from rest and accelerates with a constant acceleration of 1.35 m/s2 until she reaches a velocity of 5.7 m/s. She then continues running with this constant velocity. (Take the direction the runner is going to be the positive

Physics
A runner is jogging at a steady 8.4 km/hr. When the runner is 2.6 km from the finish line, a bird begins flying from the runner to the finish line at 42 km/hr (5 times as fast as the runner). When the bird reaches the finish line, it turns around and flies

Physics help
A motorbike starts from rest at time t=0 and begins to accelerate around a circular track as shown in the figure below. Eventually, at time t=t1 the motorbike reaches the maximum velocity possible without slipping off the track. What's the minimum length

Physics
A motorbike starts from rest at time t=0 and begins to accelerate around a circular track as shown in the figure below. Eventually, at time t=t1 the motorbike reaches the maximum velocity possible without slipping off the track. What's the minimum length

Calculus
In a test run, a new train travels along a straightline track. Data obtained from the speedometer indicate that the velocity of the train at any time t can be described by the velocity function v(t) = 8t (0 _< t _< 30) a. Find the position function of the

Calculus
In a test run, a new train travels along a straightline track. Data obtained from the speedometer indicate that the velocity of the train at any time t can be described by the velocity function v(t) = 8t (0 ¡Ü t ¡Ü 30) a. Find the position function of

maths
Function for runner one: s=0.2t(t5.1)(t9.1) Function for runner two:s=2.4+0.75t 's' is for displacement and 't' is for time (where one minute is t = 1) At the start of a race, runner one begins with a displacement of 0m. However, at the start of the same

Physics
Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity of the second runner relative to the first? (b) If

Science  Please Check my Answer 2
My problem: One runner in a relay race has a 1.50 s lead and is running at a constant speed of 3.25 m/s. The runner has 30.0 m to run before reaching the end of the track. A second runner moves in the same direction as the leader. What constant speed must

Related Rates Problem
A runner sprints around a circular track of radius 150 m at a constant speed of 7 m/s. The runner's friend is standing at a distance 300 m from the center of the track. How fast is the distance between the friends changing when the distance between them is

physics
what was the initial velocity of a race car traveling down a long straight track if it accelerates at 5.79m/s^2 and ends up going 163km/h in a time of 3.60 seconds?

physics
1) Suppose that a runner on a straight track covers a distance of 1 mile in exactly 4min. what was its average velocity in (i) mih1 (iii) cms1 (ii) fts1 (iv) kmh1 2) A bullet of mass 10g traveling horizontal at a speed of 100 ms1 embeds itself in a

Physics (Algebra Bit)
I still need help on my other question as well... A runner hopes to complete the 10,000 m run in less than 30.0 min. AFter running at constant speed exactly 27.0 min there are still 1100 m to go. The runner must then accelerate at .20 s^2 m for how many

PreCalculus
You are photographing a race at a track meet, sitting 50 feet from the center of a straightaway. A runner traveling at 20 feet per second passes in front of you. a) write a trigonometric equation to find the angle thete you have to turn your camera to

physics
How far to the nearest tenth of a meter can a runner running at 10 m/s run in the time it takes a rock to fall from rest 99 meters? Which is: (127m+89m)/13s= 216m/13s= 16.7m/s But, the second part of the problem is: What is the runner's average velocity?

physics
A race car traveling northward on a straight, level track at a constant speed travels 0.750km in 20.0s. The return trip over the same track is made in 25.0s. What is the average velocity of the car in m/s for the first leg of the run? What is the average

physics
a race car traveling northward on a straight, level track at a constant speed travels 0.750 km in 20.0 s. the return trip over the same track is made in 25.0 s. a) what is the average velocity if the car in m/s for the first leg of the run? b) what is the

physics..............
If you ever watch track and field at the Olympics, you'll notice that the starting points of the runners are not even if the race is run on a curve and the runners have to run in lanes. This is to offset the fact that the distances along each lane are

physics!!!!!!!!!!
If you ever watch track and field at the Olympics, you'll notice that the starting points of the runners are not even if the race is run on a curve and the runners have to run in lanes. This is to offset the fact that the distances along each lane are

Physics,Question ,Solved but about Units?
These are “pluginthenumber” tasks to familiarize you with the main formulas that link the physics concepts of this chapter. They are onestep substitutions, much less challenging than the Think and Solve problems that follow. Average speed ! total

physics
what is the total time and displacement if the traveler on a train throw ball on level track straight up relative to the train with a speed of 4.90m/s and velocity of 20.0m/s ?

physics 111
A runner times his speed around a circular track with a circumference of 0.508 mi. At the start he is running toward the east and the track starts bending toward the north. If he goes halfway around, he will be running toward the west. He finds that he has

physics
An 18yearold runner can complete a 10.0 km course with an average speed of 4.58 m/s. A 50yearold runner can cover the same distance with an average speed of 4.36 m/s. How much later (in seconds) should the younger runner start in order to finish the

Physics
An 18yearold runner can complete a 10.0km course with an average speed of 4.39 m/s. A 50yearold runner can cover the same distance with an average speed of 4.27 m/s. How much later (in seconds) should the younger runner start in order to finish the

Physics
An 18yearold runner can complete a 10.0km course with an average speed of 4.39 m/s. A 50yearold runner can cover the same distance with an average speed of 4.27 m/s. How much later (in seconds) should the younger runner start in order to finish the

physics
An 18yearold runner can complete a 10.0km course with an average speed of 4.53 m/s. A 50yearold runner can cover the same distance with an average speed of 3.91 m/s. How much later (in seconds) should the younger runner start in order to finish the

Physics
A runner runs 2.9 km in 9 min and then takes 30 min to walk back to the starting point. (a) What is the runner's average velocity for the first 9 min? _______ km/h (b) What is the average velocity for the time spent walking? _______ km/h (c) What is the

Maths
A runner runs a 10 metre race, the runner runs according to the following rule: s = 0.2t(t  5.1)(t  9.1) Where displacement (s) is in metres and time (t) is in minutes. Calculate for the runner: their starting position any changes in direction over the

physics
A race car travels northward on a straight, level track at a constant speed travels 0.745 km in 22.0 s. The return trip over the same track is made in 27.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run? m/s (b) What is

Physics
A runner with mass 100 kg jogs around a circular track with circumference 1 km. If he does one lap in 6 min, what is his angular momentum about the center of the track?

Physics
A train is traveling down a straight track at 22 m/s when the engineer applies the brakes, resulting in an acceleration of 1.0 m/s2 as long as the train is in motion. How far does the train move during a 40 s time interval starting at the instant the

Physics
Two runners have a race. The first runner decides to run with his full speed v₁=9 m/s over the 250 meters of the race and then slows to v₂=7 m/s for the rest, since he's tired. The second runner wants to save energy, so he runs with v₃=8 m/s for the

physics
Two runners approaching each other on a straight track have constant speeds as shown, while they are 100m apart. How long will it take for the runners to meet if they maintain their respective speeds? one runner is running 4.5m/s while the other is 3.5m/s

physics
a runner run halfway around a circular track whose radius is 60 meters in 45 secs what is the average velocity? what is the average speed?

physics
Two cars are initially moving at constant speeds of 50 m/s (first car) and 30 m/s (second car) along a straight track with the first car being behind. At a certain point (e.g. point A) on the track the first car overtakes the other one. At this very moment

Math
The inside edge of a racing track is shaped like a circle with a diameter of 420 feet. About how many times would a runner have to go around the track to run one mile?

Physics
Runner A is running at a constant rate of 2.3 m/s when he passes runner B who is stationary. Runner A continues running at a constant pace, and Runner B begins to run 4 seconds after Runner A just passes him. If Runner B is accelerating at a rate of .5

physics
Which situations are examples of a particle with a nonzero acceleration? (Select all that are true for full credit.) a)A car driving around a circular track at constant speed. b)A child going back and forth on a swing c)A runner moving in a straight line

physics
A man starts running a race with velocity v. in the begining of race he finds wind is blowing at an angle alpha with the track. As he progress straight horizontal road wind appears to rotate uniformly and by the gime he completes the race wind appears to

Physics
PhysicsA race car travels northward on a straight, level track at a constant speed travels 0.755 km in 18.0 s. The return trip over the same track is made in 23.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run? 41.94

Physics Help, check work?
A running track consists of two straight 88.5m segments and two semicircles of radius 39.0m as shown in the figure. Part A was finding the distance a runner travels in one complete lap. d= 422 m. No problem. Then part B asks for the displacement in x, y

Physics
A race car travels northward on a straight, level track at a constant speed travels 0.755 km in 18.0 s. The return trip over the same track is made in 23.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run?

math
What is true for motion in a straight line. A. if a vechile has zero velocity , it must be stationary. B.the graph of position against time has to be a straight line. C.acceleration is the rate of change of speed. D.velocity is the rate of change of

math
A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't