It takes 5s for the macho man to get a 60kg box (starting from rest) up to a speed of 5m/s.
How many watts of power did he produce?

150W

Explanation:

Given parameters:

Time taken  = 5s

Mass of box  = 60kg

Speed  = 5m/s

Unknown:

Power produced  = ?

Solution:

To solve this problem, we must understand what power is.

Power is the rate at which work is done.

                 Power =

Work done  = force x distance =  kinetic energy  =  

                    =  x 60 x 5²

                  = 750J

Therefore power:

            Power =

                       = 150W

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

answercollision;