Question

The reaction time for an automobile driver
is 0.7 sec. If the automobile can be
decelerated at 5 m/s2 calculate the total
distance travelled in coming to stop from an
initial velocity of 8.33 m/s after a signal is
observed.​

Answer 1

Answer:

Given,

Initial velocity (u) = 8.33m/s

Accleration (a) = 5m/s^2

Time (t) = 0.7sec

To find:-

Distance

By applying, S = ut+1/2at^2

= 8.33×0.7+1/2×5×0.49

= 5.831+1.225

= 7.056m.