A cutting tool under microprocessor control has several forces acting on it. One force is , a force in the negative y-direction whose magnitude depends on the position of the tool. The constant is ααalpha = 2.35 N/m³. Consider the displacement of the tool from the origin to the point x= 2.60 m , y= 2.60 m.
Calculate the work done on the tool by if this displacement is along the straight line y=x that connects these two points.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

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