Question

A train was moving with a speed of 60 km/h. When brakes were applied, a retardation of 1 m/s2 was created. Determine the time that was required by the train to come to a halt.

Answer 1

Answer:

Ans. 16.67 sec

Explanation:

Initial velocity (u) = 60km/hr = (50/3)m/s

Retardation = 1m/s^2

Final velocity (v) = 0 m/s

using 1st equation of motion-

v = u + at

t = (v-u)/a

=> 0 - (50/3)/1

=> 50/3 = 16.67sec

Mark branliest if it helps you

Answer 2

Answer:

intial velocity (u)=60km/hr=(50/3)m/s

Retardation=1m/s*2

Final velocity (v)=0m/s

Using 1st equation of motion v=it at

t=(v-u)/a

=0-(50/3)/1

=50m/3 16.67 sec.