Answer:
1. vf² = vi² + 2ad
15m/s² = 0² + 2(a)(25m)
225m²/s² = (50m)a
(225m²/s²)/50m = (50m)a/50m
a = 4.5 m/s²
2. d = v1t + ½ at²
d = 0² (3.25s) + 1/2 (2.8m/s²)(3.25s)
d = 0 + 14.8m/s²
d = 15m
3. d = (vi + vf )t / 2
d = (0m/s + 21.5m/s) 2.45s / 2
d = (52.7m/s²) / 2
d = 26.3m
4. vf = vi + at
7.25m/s = 1.50m/s + (a)(9.25s)
(7.25m/s) / (10.75m/s) = (10.75m/s)a / (10.75m/s)
a = 0.7m/s²