Of roller coaster car rapidly picks up speed as it rose down a slope as it starts down the slope, its speed is 4m/s . but 3 seconds later at the bar got bottom of the slope, is speed is 22m/s. what is its average acceleration?

6 m/s ^2

Explanation:

Acceleration: the rate of change of velocity per unit of time.

a = (v − u) /t

a = (22 m/s − 4 m/s )/3s = 6 m/s ^2

muscle endurance

explanation:

i can do 50 in a row ( but i get so tired after that)

the amount of current in the coil