A car accelerates from rest to 20 m/s in 4 s. What is its average acceleration?
Q1. A car accelerates from rest to 20 m/s in 4 s. What is its average acceleration?
Answer: 5 m/s²
Explanation: a = Δv/Δt = 20 / 4 = 5 m/s², using the formula for average acceleration.