± Kinetic Energy A goose is flying south for the winter at a constant speed. Kee

ID: 520034 • Letter: #

Question

± Kinetic Energy

A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 km , and one pound is 454 g .

Part A

The goose has a mass of 20.5 lb (pounds) and is flying at 11.2 miles/h (miles per hour). What is the kinetic energy of the goose in joules?

Enter your answer numerically in joules.

± Kinetic Energy

A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 km , and one pound is 454 g .

Part A

The goose has a mass of 20.5 lb (pounds) and is flying at 11.2 miles/h (miles per hour). What is the kinetic energy of the goose in joules?

Enter your answer numerically in joules.

Given :

Mass of the goose= 20.5 lb

Velocity of the goose = 11.2 miles /hr

Now convert mass and velocity to SI units

1 lb =0.4535 Kg

1 mile = 1.61 Km

1 Km =1000 m

1 hr =3600 s

Mass : 20.5 lb = 20.5*0.4535 kg = 9.29675 kg
Velocity: 10.8 mile/hour = (11.2 x 1.61 x 1000) / 3600 m/s = 5.00889 m/s

Kinetic energy of the goose is KE = m v²/2 = 9.29675 x (5.00889)2/2 = 116.6223 Joules

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