Question

A runner runs around a circular track. He completes one lap at a
time of *t* = 471 s at a constant speed of *v* = 3.1
m/s.

What is the radius, *r* in meters, of the track?

What was the runners centripetal acceleration,
*a _{c}* in m/s

Answer #1

A runner in a circular track was observed running at an angular
velocity of 0.230 rad/s. 2.4 seconds later, she was observed
running at 0.050 rad/s. The radius of the circular track is 61m
Show work!!!
a) What is in radians/second2 her angular
acceleration during the 2.5 seconds?
b) What is her speed in meters per second at the end of the 2.5
seconds?
c) What is in meters/second2
her tangential acceleration during the 2.5 seconds?
d) What is in meters/second2
her centripetal acceleration...

A car starts from rest and drives around a circular track with a
radius of 45.0 m at constant tangential acceleration. If the car
takes 27.0 s in its first lap around the track, (a) what is the
magnitude of its overall acceleration at the end of that lap? (b)
What angle does the acceleration vector make with a radius
line?

2. Alex and Charlie start running around a circular track at the
same time. The track has a radius of 160 meters. Alex starts at the
westernmost point and runs counterclockwise, taking 200 seconds to
run one lap. Charlie runs clockwise at 3 meters per second and
passes Alex for the first time after they have been running for 25
seconds.
(a) From when he begins running, how long does it take Charlie
to reach the northern- most point of...

A race car is on a circular track with a radius of R The driver
accelerates from rest with a constant angular acceleration of
alpha. The driver constantly accelerates as he drives one lap
around the track. What is the driver's angular velocity as he
finishes this first lap?

An athlete jogs at a constant angular velocity of 0.150 rad/s
around a circular track. At time t = 0, she passes a
stationary runner, who immediately starts chasing her with a
constant angular acceleration of 0.225 rad/s2. At what time will
the second runner have caught up to the first runner?

Imagine you are driving around a horizontal circular track (such
as a roundabout at an intersection or freeway exit). You are
driving at a constant speed of 12.0 km/h, and your circular path
has a radius of 18.0 meters.
(a) When you are at the northernmost point on the circular track
and driving towards the west, what is your acceleration? Give your
answer in m/s2
The magnitude is m/s2,
and the direction is choose from the drop-down list
South West East North...

An automobile moves on a circular track of radius 1.04 km. It
starts from rest from the point (x, y) = (1.04 km, 0 km) and moves
counterclockwise with a steady tangential acceleration such that it
returns to the starting point with a speed of 29.2 m/s after one
lap. (The origin of the Cartesian coordinate system is at the
center of the circular track.)
What are the car's position and velocity vectors when it is
one-sixth of the way...

Particles A and B are traveling counter-clockwise around a
circular track at a constant speed of 8 m/s . At the instant shown
the speed of A begins to increase by (at)A=(0.8sA)m/s2 , where sA
is in meters. Suppose that r = 6 m .
Part A
Determine the distance measured counterclockwise along the
track from B to A when t = 1 s.
Express your answer to three significant figures and include
the appropriate units.
d =
Part B...

A car is traveling around a horizontal circular track with
radius r = 210 m at a constant speed v = 23 m/s as shown. The angle
θA = 23° above the x axis, and the angle θB =
53° below the x axis.
1)
What is the magnitude of the car’s acceleration?
m/s2
Your submissions:
2)
What is the x component of the car’s acceleration when it is at
point A
m/s2
Your submissions:
3)
What is the y...

can someome answer these please?
A runner jogs one lap around the track that encircles a
football field (and, if it were me, would immediately collapse). If
she ends where she began, and the distance is one-quarter mile,
what is the displacement of the jogger?
A rocket is fired from the launch pad, obtaining a speed of
650 m/s in 7.0 seconds. What is the average acceleration of the
rocket? Round to the nearest integer.
A coyote, closely related to...

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