Question

a man started observing a car at 8 o'clock when it was travelling with a velocity of 40 km per hour at 8:20 he found that a car was travelling with a velocity of 60 km per hour calculate the acceleration between the two

Answer 1

Answer:

As we know,

1hr=60min

Therefore,1min=1/60hr

hope this answer is helpful to you

Answer 2

Answer:-

Acceleration

The rate of change of velocity is termed as acceleration.

It's units are:- ${m/s^2}$

Explanation:-

Time for which it travels

= 8:20 - 8:00 = 20 minutes.

60 minutes = 1 hour.

20 minutes = 20/60

=1/3 hour.

Acceleration =(v - u)/t.

a = (60 - 40)×3/1

a= 20×3

a = 60 ${Km/h^2}$

$\boxed{\boxed{a = 60 Km/h^2}}$

So, acceleration produced is 60 ${Km/h^2}$