Can anyone tell me the answer of these whole question? thank you so much!

a) the most dangerous combination of tires and roads surfaces are old tires on wet concrete because it shows the longest distance moved by a car when the brake is pushed

b) Old tires on wet concrete

c) wet tires require longer braking distance than dry tires because the wet surface on the tires slide rather

than stopping gradually.

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s