Adoorknob makes it easier to twist a door latch in or out. how does a doorknob do this?
a.
by reducing the distance over which the input force is applied

b.
by decreasing the amount of input force needed to move the latch

c.
by increasing the amount of input force needed to move the latch

d.
by changing the direction of the input force

b

Explanation:

idk its jus the answer i got on my study island i-

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.