The greatest speed recorded by a manned air breathing jet aircraft is 2,194 miles per hour. what is the speed in kilometers per hour? 1.6 1,371 3,530 13,383

 v = 3530 km / h

Explanation:

To make the change from thousands / h to km / h, we must reduce the magnitude

      1 mile = 1,609 km

So the reduction is

     v = 2194 miles / h (1,609 km / 1mile)

     v = 3530 km / h

answer: option c.

explanation:

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s