Question

please this sum please please please please please please please ​

Answer 1

Answer:

Explanation:

Retardation = change in velocity / time

25 = change in velocity/ 20

Change in velocity = 500cm/s

Change in velocity = 5m/s

V=5m/s

V^2/2a

25/50

1/2 cm

50m

Answer 2

Explanation:

S=ut+1/2gt^2.

=u*20+1/2*25*20^2.

v=u+at

u=v-at

0-(-25)*20= 500cm=5m

S=500*20+1/2*(-25)*20^2

S= 10000+(-5000)=5000cm=50m