What does it mean when we say that an airplane is accelerating at a rate of 7 km/h each second?

Question

What does it mean when we say that an airplane is accelerating at a rate of 7 km/h each second?

Answer 1

It means it is accelerating 7000m/3600 per second per second.

that is 7000/3600sec^2. So the equation of its speed is

V=7000/3600 m/sec^2 and the eqation of its displacement is

1/2X {7000/3600}Xt^2 =0.97222Xt^2

Answer 2

Each second, it's speed increases by 7km/h.

Answer 3

its speed increases by 7kmph each second, this means if starting at rest it will reach 7 kmphafter 1 sec

14 kmph after 2 sec

21 kmph after 3 sec

70 kmph after 10 sec

140 kmph after 20 sec

and so on!!

Answer 4

velicity of the plane increases in each second  at the rate of 7km/hr