Respuesta :
Answer:
Energy due to air resistance = 31.8 Joules
Explanation:
According to the law of conservation of energy, energy can neither be created nor destroyed but can be transformed from one form to another
Kinetic Energy + Energy due to air resistance = Potential energy..........(1)
If there is no energy loss due to air resistance, potential energy = kinetic energy
mass, m = 1.5 kg
height, h = 4.0 m
speed, v = 6 m/s
Kinetic energy = 0.5 mv²
Kinetic energy = 0.5 * 1.5 * 6²
Kinetic energy = 27 Joules
Potential Energy = mgh
Potential energy = 1.5 * 9.8 * 4
Potential energy = 58.8 Joules
From equation (1)
27 + Energy due to air resistance = 58.8
Energy due to air resistance = 58.8 - 27
Energy due to air resistance = 31.8 Joules
Answer:
Explanation:
Note:
Air resistance in the way means not all of the potential energy can be converted to kinetic energy.
Given:
Mass = 1.5 kg
D = 4 m
Vf = 6 m/s
Energy + KE = PE
= (M × g × d) - (1/2 × M × V^2)
= (1.5 × 9.8 × 4) - (1/2 × 1.5 × 6^2)
= 58.8 - 27
= 31.8 J
