How much time does she have to run the last

Reference no: EM13295438

In order to pass a physical fitness test, Marcella must run 1000 m at an average speed of 3.90 m/s. She runs the first 250 m at an average of 4.05 m/s. How much time does she have to run the last 750 m? What should be her average speed over the last 750 m in order to finish with an overall average speed of 4.20 m/s? Any help is appreciated, thanks!

Reference no: EM13295438

Questions Cloud

The output voltage for a certain electric circuit : The output voltage for a certain electric circuit is specified to be 130. A sample of 40 independent readings on the voltage for this circuit gave a mean of 128.6 and a standard deviation of 2.1.Test the hypothesis that population mean output voltage..

Find the angular speed of turntable after parachutis lands : A large wooden turntable in the shape of a flat uniform disk has a radius of 2.00 {\rm m} and a total mass of 120kg. Find the angular speed of the turntable after the parachutist lands

Detailed explanation of string constraint relation on pulley : Detailed explanation of string constraint relation on pulley based problems -

What was the tension in the string an instant : A 200 g ball on a 55-cm-long string is swung in a vertical circle about a point 200 cm above the floor. What was the tension in the string an instant

How much time does she have to run the last : In order to pass a physical fitness test, Marcella must run 1000 m at an average speed of 3.90 m/s. How much time does she have to run the last 750 m

Design a 10-to-4 encoder with inputs in the1-out-of-10 code : Design a 10-to-4 encoder with inputs in the1-out-of-10 code and outputs in a code like normal BCD except thatinput lines 8 and 9 are encoded into "E" and"F", respectively.

Finding the constraint relaion in strings : Give me a very detailed exlanation of finding d Constraint relaion in strings and how do u find it do set a reference point

What force does the seat exert on the book : Your 3.90 kg physics book is next to you on the horizontal seat of your car. The coefficient of static friction between the book, What force does the seat exert on the book in this process

How are habeas corpus appeals limited in capital cases : How are habeas corpus appeals limited in capital cases? Explain the underlying rationale. How does the Innocence Project play a part in capital offenses

User Account

All Pages