Answer: 291.68 m
Explanation:
Hi, to answer this question, first we have to calculate the acceleration:
Acceleration (a) = v2- v1 /t
Where: v1 =speed 1
v2: speed2
t = time (hours)
Since: 1 km/h = 1000/3600 m/s
v2= 120x 1000/3600 m/s = 33.3333 m/s
v1= 20 x 1000/3600 m/s =5.5556 m/s
Replacing with the values given:
a = 33.33-5.556 / 15 = 1.852 m/s^2
To find the distance:
d = v1 t + 1/2 a t^2 = 5.5556 m/s (15s) + 1/2 (1.852 m/s^2) 15s^2 =291.68 m
