Answer:
a) 4 m/s^2
b) 175 m
Explanation:
Acceleartion is Δv/Δt. Δv = 45 - 25 = 20 m/s and Δt is 5 s. 20/5 = 4. From here we can use two approaches to solve for b
1) [tex]d = v_{i} t + \frac{1}{2} at^{2}[/tex], where d is distance, [tex]v_{i}[/tex] is the intital velocity, a is acceleration, and t is time
2)[tex]d = \frac{v_{i} + v_{f} }{2} * t[/tex], where [tex]v_{i}[/tex] is the intital velocity, [tex]v_{f}[/tex] is the final velocity, and t is time.
If you plug in the numbers for either equation, you should get 175 m.
