Question

a practicle moving with an initial velocity of 5ms-1 is subjected to a uniform acceleration of-2.5ms-2.find the displacement in the next 4 seconds

Answer 1

Answer:

Given,

Initial velocity =u=5m/s

Acceleration=a=-2.5m/s2

Time =t=4sec

Displacement =s =?

From Second equation of motion:

S=ut+ 1/2 at^2

=5×4+1/2*(-2.5)4*4

=20-25*16/2*10

=20-20

=0 m

Hope this helps you...