To qualify for the finals in a racing event, a race car must achieve an average speed of 250. km/h on a track with a total length of 1.60 × 10°. If a particular car covers the first half of the track at an average speed of 230. km/h, what minimum average speed must it have in the second half of the event to qualify?

To qualify for the finals in a racing event, a race car must achieve an average speed of 250. km/h on a track with a total length of 1.60 × 10°. If a particular car covers the first half of the track at an average speed of 230. km/h, what minimum average speed must it have in the second half of the event to qualify?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 57P: In 1999, Robbie Knievel was the first to jump the Grand Canyon on a motorcycle. At a narrow part of...

See similar textbooks

Similar questions

the leprechaun in the shamrock patch was named O'Malley and since he was disrupted from sitting in his patch he decided to go off and play a round of his favorite sport in where leprechaun kick a gold coin from a tee into a post 317m away. if he kicked the coin at an angleof 60 degree at a velocity of 60 m/s how high was the arch of the rainbow created by the trajectory? how long did it take to get to the pot?
Passengers on the deck of a boat with a speed of Vs= 20⁡ m/s with the given direction experience a wind blowing at a speed of Vw = 10⁡ m/s as shown. What is the magnitude of the wind speed experienced by someone on the shore?
A field biologist is studying the migration patterns of northern gannets (a type of seabird). On one particularday, she records that they fly 5.0 km northeast, then turn toward to the south of east by 30 degrees and fly 4.0 kmin the new direction. How far north or south of their original position are the birds?
Eddie Manalak is a Filipino stuntman, he wishes to cross the 520m distance between two tall buildings by being shot from a cannon. He wishes to be launched at 60° to the horizontal so that he can spend more time in waving to the crowd. With what speed must he be launched? ANS. 76.7 m/s
An airplane in a holding pattern flies at constant altitude alonga circular path of radius 3.50 km. If the airplane rounds half thecircle in 1.50 x 102 s, determine the magnitude of its (a) displacementand (b) average velocity during that time. (c) Whatis the airplane’s average speed during the same time interval?
A boat heads northwest at 20k(m)/(h) in a river that flows east at 6k(m)/(h). What are the mognitude and direction of the boat's velocity relativeto the earth's surfoce?
A brick is thrown upward from the top of the building at an angle of 25degrees to the horizontal and with an initial speed of 15 m/s. If the brick is in flight forb30 sec how tall is the building
Coast Guard rescue swimmers are trained toleap from helicopters into the sea to save boaters in distress. Therescuers like to step off their helicopter when it is “ten and ten,”which means that it is ten feet above the water and moving forward horizontally at ten knots. What are (a) the speed and (b) thedirection of motion as a rescue swimmer enters the water following a ten and ten jump?
An object is launched with an initial velocity of 26.7 m/s at an angle of 36.5 degrees relative to the +x direction. If it is initially at ground level, at what distance away does it return to the ground?
To qualify for the finals in a racing event, a race car mustachieve an average speed of 250. km/h on a track with a totallength of 1.60 x 103. If a particular car covers the first half ofthe track at an average speed of 230. km/h, what minimumaverage speed must it have in the second half of the event toqualify?
A pilot wants to fly due north, but finds that he must direct his plane 19.0° to the east to accomplish this. If the plane's air speed is 200 km/h, and the wind is from the east, what is the wind speed in km/h?
A canon ball was launched with a muzzled speed of 234m/s with an angle of 16.7° from the horizontal. What is the horizontal speed of the canon ball after 2.01s?