---
title: "An experimental electric vehicle of mass \\(m\\) uses a regenerative braking system that converts all of its kinetic energy into stored electrical energy while bringing the vehicle to a complete stop with constant acceleration. In Test 1, the vehicle enters the braking zone at speed \\(v_0\\) and comes to rest over a distance \\(d\\). In Test 2, the same vehicle enters the braking zone at speed \\(2v_0\\) and comes to rest over a distance \\(2d\\). What is the ratio \\(P_2 / P_1\\) of the average power delivered to the energy storage system during Test 2 compared to Test 1?"
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url: "https://nerd-notes.com/ubq/119047/"
date_modified: "2026-08-21T06:33:54+00:00"
---

# An experimental electric vehicle of mass \(m\) uses a regenerative braking system that converts all of its kinetic energy into stored electrical energy while bringing the vehicle to a complete stop with constant acceleration. In Test 1, the vehicle enters the braking zone at speed \(v_0\) and comes to rest over a distance \(d\). In Test 2, the same vehicle enters the braking zone at speed \(2v_0\) and comes to rest over a distance \(2d\). What is the ratio \(P_2 / P_1\) of the average power delivered to the energy storage system during Test 2 compared to Test 1?

An experimental electric vehicle of mass \(m\) uses a regenerative braking system that converts all of its kinetic energy into stored electrical energy while bringing the vehicle to a complete stop with constant acceleration. In Test 1, the vehicle enters the braking zone at speed \(v_0\) and comes to rest over a distance \(d\). In Test 2, the same vehicle enters the braking zone at speed \(2v_0\) and comes to rest over a distance \(2d\). What is the ratio \(P_2 / P_1\) of the average power delivered to the energy storage system during Test 2 compared to Test 1?

- **A.** \(1\)
- **B.** \(2\)
- **C.** \(4\)
- **D.** \(8\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119047/*