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tankabanditka [31]
3 years ago
12

if the speed of a truck is reduced from 26.7m/s to 6.7m/s within a distance of 800m find how long were the breaks applied and ho

w much longer would it take before coming to rest​
Physics
1 answer:
lys-0071 [83]3 years ago
8 0

Brakes are applied for 47.96 seconds.

Explanation:

Initial speed, u = 26.7 m/s

Final sped, v = 6.7 m/s

Distance, d = 800 m

Firstly, lets find acceleration of the truck. Using third equation of motion as :

Finding t using first equation of motion as :

Brakes are applied for 47.96 seconds.

Learn more,

Kinematics

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