The graph shows the acceleration of the cart with three
different fan speeds. the fan provides the force
necessary to accelerate the cart.
as the fan speed increases, the acceleration of the cart
the type of relationship that exists between the force
applied to the cart by the fan and the acceleration of
the cart is
relationship.

Explanation:

We know that the rate of change of velocity is called acceleration of an object. Its expression is given by :

The force acting on an object is the product of mass and acceleration. It is given by :

F = ma

It is clear that as the fan speed increases, the acceleration of the cart increases. Also from the Newton's second law of motion, the force  applied to the cart by the fan and the acceleration of the cart has direct relationship.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27