Convert 278000 into scientific notation

2.78 X 10^5 is the best answer to be responded to

278000 written in scientific notation would be 2.78×10⁵.

You can convert the number into scientific notation by doing the following:

1. Turn 278000 into 2.78000.

2. Move the decimal point to the end of the number, so that it becomes 278000 again.

3. Count the number of places that the decimal point was moved.

Since the decimal point was moved 5 places to the right, the exponent on the 10 will be positive five. Therefore, 278000 becomes 2.78×10⁵.

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