Calculate the proton's initial kinetic energy express your answer with the appropriate units. constants an infinitely long line of charge has linear charge density 4.00x10-12 c/m aproton (mass 1.67x 10 2 kg, charge +1.60x 10 toward the line at 2.90x103 m/s k 7.02x10-21 j c) is 18.0 cm from the line and moving directly submit previous answers correct part b how close does the proton get to the line of charge? express your answer with the appropriate units. ? d= 0.1199 m

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

total distance/total time

(85 + 82)/(5+3)

167/8

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