8. The figure below shows how to empty water from a large tank into a low
lying container using rubber tubing:
a
B
С
A
2 m
t..
D
(a) Explain why the tube must
be filled with water before the
emptying process starts.
(b) Soon after the tank begins to empty,
the lower end is momentarily
blocked by placing a finger at
end D. Determine the pressure
difference between points A and
D. (Take density of water to be
(1000 kgm )
ri​

i would say the answer is food.

hope this !

f=ma newton

f=100x2.5=250n

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.