The diagram above shows a top-down view of two kids dragging a box by pulling on ropes attached to the box. Kid A pulls with a force of 17 N in a direction of 52° as defined by θA shown in the picture above. The box has a mass of 38 kg and accelerates in the positive y direction with a magnitude of 1.35 m/s2. The acceleration vector for the box has an x component of zero meters per second squared. What is angular direction that Kid B pulls on their rope? Your answer should be consistent with the arc that defines θB in the diagram above.

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 answer is 12 as i may remember

: )