The total energy at the top is only the gravitational potentaial
energy
And the total energy at the bottom is only the kinetic energy
So, energy dissipated is
Putting the given values, we get
PHYS 201-002 General Physics Fall 2018 <HW Set #5: Chapter 6 Problems Problem 6.53 Part A...
A 66-kg skier starts from rest at the top of a 1200-m-long trail which drops a total of 180 m from top to bottom. At the bottom, the skier is moving 11 m/s.How much energy was dissipated by friction?
2019-fall-PHYS-201-012 <HW-34_ch-12 Problem 12.55 A projectile is launched vertically from the surface of the Moon with an initial speed of 1160 m/s. At what altitude is the projectile's speed one-half its initial value? Express your answer using two significant figures. 90 AEC O ? 310 Submit Previous Answers Request Answer X Incorrect; Try Again; 8 attempts remaining Provide Feedback
2019-fall-PHYS-201-012 HW-34 ch-12 Problem 12.55 A projectile is launched vertically from the surface of the Moon with an initial speed of 1160 m/s. Part A At what altitude is the projectile's speed one-half its initial value? Express your answer using two significant figures. Π ΑΣφ h310 km Submit Previous Answers Request Answer x Incorrect; Try Again; 8 attempts remaining Provide Feedback