Hai điện tích bằng nhau về độ lớn nhưng trái dấu, điểm M nằm trên đường trung trực của đoạn thẳng nối 2 điện tích. Vecto cường độ điện trường tại M có hướng nào?

are their multiple choices ?

explanation:

measure their densities same density, same sub

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

the maxium height is 34m/s