In order to get the ball to move in three dimensions, you have to change the initial position and velocity of the ball. If you give the ball an initial position of < 0.1, -L0, 0 >, which of the following initial velocities will cause the ball to move in three dimensions?

A. An initial velocity with nonzero y and z components and zero x component.
B. An initial velocity with a nonzero y component and zero x and z components.
C. An initial velocity with a nonzero x component and zero y and z components.
D. An initial velocity with nonzero x and y components and zero z component.
E. An initial velocity with a nonzero z component and zero x and y components.
F. An initial velocity with nonzero x and z components and zero y component.
G. An initial velocity of < 0,0,0 > An initial velocity with nonzero x, y, and z components.

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

true tan speed = ang vel x radius

it is a negative acceleration

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.