Question

A train is accelerating at a rate of 2 m/s. If its initial velocity is 20 m/s, what is its

velocity after 30 seconds?
Given:
Equation:
Plug in:
Answer:

Answer 1

80 m/s

Step-by-step explanation:

Given:

a = 2 m/s²

v₀ = 20 m/s

t = 30 s

Find: v

Equation:

v = at + v₀

Plug in:

v = (2 m/s²) (30 s) + 20 m/s

v = 80 m/s

After 30 seconds, the train's velocity is 80 m/s.