2) A centrifuge is used to spin medical samples and separate substances by their masses. If the matter that ends up at the bottom of the test tubes is spinning at a tangential velocity of 50 m/s, at a distance of .04 m from the axis of rotation, what is the radial acceleration? a) 62,500 m/s2 b) 75,000 m/s? c) 40,500 m/s? d) 55,000 m/s2 T

momentum of soft ball three times less than baskey ball

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

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