Which will heat up fast, metal or cotton?

Metal heats fast but cotton combusts at a low temperature it would depend on the amount and conditions of each.

Explanation:

equal amounts metal will heat faster

more cotton metal will heat faster

less enough amount of cotton, cotton will combust and therefore it will have heated faster in that case.

metal is a great conducter of heat and cotton is just very flammable

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