Which statements describe how a machine can help make work easier? Select two options.
A) It can put out more force than the input force by decreasing the distance through which force is applied.
B) It can increase the amount of work performed if the output force is in the same direction as the input force.
C) It can apply a force to an object in a different direction than the force applied to the machine.
D) It can increase the distance through which a force acts by exerting less force than was used on it.
E) It can exert a greater force through a greater distance than the force used on the machine.

Hi there! Hopefully this helps!

A.) It can put out more force than the input force by decreasing the distance through which force is applied.

D.) It can increase the distance through which a force acts by exerting less force than was used on it.

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

what is the actual question though?