While newton's second law often deals with formulas and numerical calculations, there exist one very important nonnumerical convention that must be appreciated and adhered to. on september 23, 1999, mars climate orbiter--a $125 m space mission--was lost when a small rocket was fired to adjust entry to the mars atmosphere. unfortunately, one operator assumed the thrust value was given in english units when actually nasa specifications gave it in metric units. this is an example of consequences if the mks convention is not precisely honored. what does the mks convention designates the following? a) measure distance in miles, mass in kilograms and time in seconds b) measure distance in meters, mass in kilograms and time in seconds c) measure mass in newtons, distance in kilometers and time in seconds d) measure time in minutes, distance in kilometers, mass in kilograms

Option B is the correct answer.

MKS system gives the following units:

Distance meters

Mass Kilograms

Time seconds

meter is basic unit for length measurement. smaller units are centimeter, millimeter, micrometer, bigger units are kilometer and so on.

kilogram is the basic unit for mass. smaller unit is gram.

second is the basic unit for time. Greater units are minutes, hours, smallest unit are micro second and so on.

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

there are no correct statementd on the list of choices you provided.