Answer:
5 m/s² & 20 m
Step-by-step explanation:
#1
Acceleration = Final velocity - Initial velocity/Time
Acceleration = 15 - 5/2
Acceleration = 10/2
Acceleration = 5 m/s²
#2
v² - u² = 2as
(15)² - (5)² = 2(5)(s)
225 - 25 = 10s
200 = 10s
200/10 = s
20 = s