a skateboard rolls horizontally off the top of a staircase and lands at the bottom of the stairs. the staircase has a horizontal length of 15.0 m and the jump last 1.15s. what's the skater's vertical velocity upon landing

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.