A helicopter’s speed increases from 25 m/s to 60 m/s in 5 seconds. What is the acceleration of this helicopter?

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Answer 1 · 2018-03-13T06:49:42

#7"" ms^-2#

Let acceleration be #color(indigo)(" "a)#
Initial velocity be #color(indigo)(" " u)#
Final velocity be #color(indigo)(" "v)#

#u=25ms^-1#

#v=60ms^-1#

In newtonian physics

#a=(v-u)/t" or " (Deltav)/(Deltat)#

#a=(60-25)/5#

#a=35/5=7ms^-2#

In modern physics
we need to consider time dilation.

since the velocities are too small the results would be same to more than 5 decimal places..