The glider floats on a cushion of air to reduce friction. suppose that this measure is ineffective, and there is a non-negligible, but unknown friction force caused by physical contact between the glider and the track, and that the frictional force now does depend on the normal force. show analytically how it would affect your resultant calculation of g. for example, will this added friction cause your calculated value of g to increase or decrease?

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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