Marla is running clockwise around a circular track. She runs at a constant speed of 2...

Marla is running clockwise around a circular track. She runs at a constant speed of 2 meters per second. She takes 46 seconds to complete one lap of the track. From her starting point, it takes her 12 seconds to reach the northernmost point of the track. Impose a coordinate system with units in meters, the center of the track at the origin, and the northernmost point on the positive y-axis. (Round your answers to two decimal places.)

(a) Give Marla's coordinates at her starting point. (

b) Give Marla's coordinates when she has been running for 10 seconds.

(c) Give Marla's coordinates when she has been running for 909.3 seconds.

Expert Solution

milcah answered 2 years ago

A runner sprints around a circular track of radius 130 m at a constant speed of...

A runner sprints around a circular track of radius 130 m at a constant speed of 7 m/s. The runner's friend is standing at a distance 260 m from the center of the track. How fast is the distance between the friends changing when the distance between them is 260 m? (Round your answer to two decimal places.) m/s

1.1 While a car travels around a circular track at a constant speed its, which of...

1.1 While a car travels around a circular track at a constant speed its, which of the following is true? A) it has non-zero acceleration B) it has zero acceleration C) it has zero velocity, because the speed is constant D) It has zero inertia 1.2. How many of the following statements are impossible? (a) An object that has zero velocity and a non-zero acceleration. (b) An object that travels with a constant velocity and a varying acceleration. (c) An...

1a. A car drives around a circular track of diameter 154 m at a constant speed...

1a. A car drives around a circular track of diameter 154 m at a constant speed of 45.1 m/s. During the time it takes the car to travel 97 degrees around, what is the magnitude of the car s average acceleration? b. A car starts from rest, then accelerates at a constant rate over a distance of 63 m. It then immediately decelerates at a constant rate over a distance of 122 m. The entire trip lasts a total duration...

1)A 75 kg cyclist races around a circular track at a constant speed of 20 m/s....

1)A 75 kg cyclist races around a circular track at a constant speed of 20 m/s. The radius of the track is 50 m. Express both of your answers to the nearest whole number. a) What is the acceleration of the cyclist? b) What is the net force acting on the cyclist? 2)In the Bohr model of the hydrogen atom, an electron circles a proton in an orbit whose radius is 5.30 x 10-11 m. a) Find the magnitude of...

George and Paula are running around a circular track. George starts at the westernmost point of...

George and Paula are running around a circular track. George starts at the westernmost point of the track, and Paula starts at the easternmost point. The illustration below shows their starting positions and running directions. They start running toward each other at constant speeds. George runs at 8 feet per second. Paula takes 50 seconds to run a lap of the track. George and Paula pass each other after 11 seconds. After running for 3 minutes, how far east of...

Charlie and Alexandra are running around a circular track with radius 60 meters. Charlie started at...

Charlie and Alexandra are running around a circular track with radius 60 meters. Charlie started at the westernmost point of the track, and, at the same time, Alexandra started at the northernmost point. They both run counterclockwise. Alexandra runs at 4 meters per second, and will take exactly 3 minutes to catch up to Charlie. Impose a coordinate system with units in meters where the origin is at the center of the circular track, and give the x- and y-coordinates...

1. Khalif runs a full lap around a circular track of radius 20 m in 100...

1. Khalif runs a full lap around a circular track of radius 20 m in 100 s. What is the magnitude of his average velocity? 2. A 10 Newton force is needed to move an object with a constant velocity of 5.0 m/s. What power must be delivered to the object by the force? 3. A ball is kicked horizontally with an initial speed of 8.0 m/s from the edge of a cliff. A stop watch measures the ball’s trajectory...

4. A car of mass m is traveling with constant speed v around a circular banked...

4. A car of mass m is traveling with constant speed v around a circular banked road of radius R, see the side view and the free-body diagram. a) Apply Newton’s 2nd law to the car, i.e. write equations for the centripetal, angular, and vertical components of the net force. b) Determine the angle θ at which the road should be banked so that no static friction is required to drive the car. Now, include the static friction force FS...

Consider three vehicles running on a circular track of circumference 2 km. Vehicle A travels at...

Consider three vehicles running on a circular track of circumference 2 km. Vehicle A travels at a constant speed of 30 km/h, vehicle B travels at 60 km/h and vehicle C travels at 90 km/hr. Calculate the ratio of space mean speed over time mean speed.

Q1 The crank of a slider mechanism rotates clockwise at a constant speed of 300 rpm....

Q1 The crank of a slider mechanism rotates clockwise at a constant speed of 300 rpm. The crank is 15Q mm and the connecting rod is 60P mm long. Determine: a) Linear velocity and acceleration of the Slider. b) Angular velocity and angular acceleration of the connecting rod, at a crank angle of 45° from inner dead centre position.

Question