A rock is dropped from a tall building and is heard to hitting the ground 7.17 s after being dropped. Determine the height of the building. Round to one decimal places.

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

explanation:

to push or pull an object in a certain direction is known as force. a force in moving an object from one place to another.

force depends on the mass of an object. so, more is the mass of an object more will be the force required to move the object.

thus, we can conclude that the use of force to move an object is push or pull.