Question

a lory travelling with a velouty of 50 m/s came to rest in 5 second it so what hhappend in it acceleration or retondaion calculate it

Answer 1

GIVEN -

Final velocity (v) = 0 m/s

Initial velocity (u) = 50 m/s

Time (t) = 5 s

TO CALCULATE -

The acceleration or retardation

CALCULATION -

Let the acceleration be a

According to the first equation of kinematics,

v=u+at

Substituting v, u and t,

0 = 50 + a(5)

= > -5a = 50

= > a= -10

The acceleration is negative, so it is retardation.

ANSWER

The retardation of the car is 10 m/s²

Answer 2

Answer:

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