A 2.0 kg block slides down a frictionless ramp from height 5.0 m onto a horizontal surface with . How far does it slide on the rough surface? ( m/s²)
- A
2.5 m
- B
20 m
- Ccheck_circle
12.5 m (, so )
- D
5.0 m
Explanation
All gravitational PE converts to KE then dissipates as friction work. , m.