Adrag racer crosses the finish line doing 212 mi/h and promptly deploys her drag chute. (a.) what force must the drag chute exert on the 898- kg car to slow it to 45 mi/h in a distance of 185m? (b.) describe the strategy you used to solve (a.)

initial speed of the racer is given as

after applied force the final speed is given as

now during this speed change the racer will cover total distance 185 m

so here we will use kinematics

now the force that chute will exert on the racer will be given as

B) here following is the strategy for solving it

1. first we used kinematics to find the acceleration of the car

2. then we used Newton's II law (F = ma) to find the force

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graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2