Question

Q1: How much energy (in Joules) is consumed to bring 1 kg of fruits/vegetables from local market/farm (within the distance of 5 Km) over a bicycle? Consider speed of the bicycle is 10 m/s and air resistance is the main opposing force. Make suitable assumptions for estimation.

Answer 1

Answer:

By work energy theorem: -

Work done by all = change in kinetic energy

W = \bold{{KE}_{f}}KE

f

- \bold{{KE}_{i}}KE

i

•W = \frac {1}{2}

2

1

m \bold{{v}^{2}}v

2

•W = \frac {1}{2}

2

1

× 1 × 10 ×10

•W = 50 juoles

Note: force produced by the bicycle is equal to the air resistance, for that very reason it has 0 acceleration and moving with constant velocity.

hope it helps!

Answer 2

Answer:

Answer is 1000 Kilo Joules