A uniform rectangular plate of length B = 18 cm and height A = 36 cm has a rectangular corner cut out of it of length D = 9 cm and height C = 5 cm. The plate is made of a material of area mass density σ. For this problem we set the origin at the lower left corner of the plate with the x-axis horizontal pointing right and the y-axis vertical pointing up.
Part (a) Calculate the value of the y-coordinate, in centimeters, for the center of mass of the plate.
Part (b) Calculate the value of the x-coordinate, in centimeters, for the center of mass of the plate.

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

inverse v=i*r

nice nice