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A car is traveling at a speed of 80 ft/s when the brakes are suddenly applied, causing a constant deceleration of 10 ft/s 2 . Determine the time required to stop the car and the distance traveled before stopping.

 


A car is traveling at a speed of 80 ft/s when the brakes are suddenly applied, causing a constant deceleration of 10 ft/s2. Determine the time required to stop the car and the distance traveled before stopping.

Grade:Upto college level

3 Answers

Yogita Bang
39 Points
8 years ago

t=8s

Tanmay Warwadkar
34 Points
8 years ago

a = v/t ; t = v/a ....

t= 80/10 = 8 seconds....

v2-u2 = 2as

here v=0 and u=80ft/sec;

-6400=2×(-10)×s

s= 6400/20 = 320ft....

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lokesh soni
37 Points
8 years ago

V=U+AT

V=0

A=-10FT/S2

U=80FT/S

80=10T

T=80/10=8SEC

S=UT+AT2/2

S=80*8-10*64/2

S=320FT

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