Exactly 3.1 s after a projectile is fired into the air from the ground, it is observed to have a velocity v
= (9.0 i +5.0 įm/s, where the z axis is
horizontal and the y axis is positive upward.
What is the horizontal range of the projectile? what is the maximum height above ground? what is the speed of motion just before the projectile strikes the ground? what is the angle of motion just before the projectile strikes the ground?

c

explanation:

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.