If gravity did not affect the path of a horizontally thrown ball, the ball would
a.
go straight up
c.
fall straight down
b.
travel horizontally
d.
follow a curved path
select the best answer from the choices provided
a
b
c
d

The correct answer is- B) travel horizontally.

Explanation -

As per the Newton's first law of motion, every body continues to be at state of rest or of uniform motion in a straight line unless and untill it is compelled by some external and unbalanced force.

As per the question, the ball is thrown horizontally.

If gravity did not affect the ball, it will follow horizontal path.

Thus, option B) travel horizontally is the right answer.

given data:

determine the horse power (h.p) = ?

force applied to move the box(f) = 10 pounds,

box lifted from a distance         (d) = 3 feet

time taken to lift                         (t) = 10 sec,

the horse power is defined as amount of work required to move a load. the horse power is equal to 550 foot-pound per second

                  1 h.p   = 550 foot-pound/second

it can also be defined as the the load that need to be move a body for certain distance in a certain amount of time.

mathematically,

                      h.p = (force × distance)/ time

                            = (10 × 3)/ 10

                            = 30/10

                            = 3 foot -pound/sec

hence, the horse power is needed to move the box is 3 foot-pound/second

important note: 1 h.p = 550 foot-pound/second = 746 watts

found in the nucleus

has mass of one amu