Awoman weighing 500 n glides across some ice, starting her glide with a speed of 4.00 m/s. if the coefficient of friction between the skates and the ice is 0.115. how far does she go before coming to rest?

(65°f − 32) × 5/9 = 18.333°c

as we know that work done by external environment is given as

here we know that

p = 200 n/m^2

now we will have

so work done by external atmosphere will be 40 j

so correct answer will be

a. 40 joules

given that

mass of ball = 0.095 kg

initial velocity of ball towards the wall = 40 m/s

final velocity of the ball after it rebound = 30 m/s

now change in momentum is given as

so change in momentum will be 6.65 kg m/s