Question

a ship is moving at a speed of 56km/hr , in one sec later it is 58km/hr. what is the acceleration of ship. please help

Answer 1

a=∆v/∆t
a=58-56/1
a=2/1
a=2 km/s2

Answer 2

u=15.56 m/s
v=16.11m/s
t=1s
therefore acc.n is 0.55 m/s (approx.) OR 1.98km/hr