A 500 kg roller coaster car moves down a 'steep slope track, converting its potential energy into kinetic energy. At the lowest point, its speed is 20 m/s. If the car passes through a friction section where 30,000 J of energy is lost, what will be its new speed, assuming no other forces act?
Subject: General Awareness | Topic: Science | Difficulty: MEDIUM
Options
- (A) ≅20 m/s
- (B) ≅15 m/s
- (C) ≅10 m/s
- (D) ≅18 m/s
Verified Answer
Option (D): ≅18 m/s
Practice complete mock tests for SSC, Banking & Railway exams at https://testx.in/questions/01a0bf93-4503-7176-9219-270ce71ff85c/a-500-kg-roller-coaster-car