Question

An object moving with a speed of 6.25m/s is decelerated at a rate given by dv/dt = -2.5√v. Find time taken by the object to come to rest

Answer 1

Answer:

Explanation:

(dv / dt) = – 2.5 ÷v fi (dv / v) = – 2.5 dt

fi Ú Ú = - dt  

v

dv 2. 5  fi [ v ]

0  

26.25

= 2.5 t

fi t = (2 × 2.5) / 2.5) = 2 sec