A goose is flying south for the winter at a constant speed. Keep in mind that on
ID: 544805 • Letter: A
Question
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 21.0 lb (pounds) and is flying at 8.30 miles/h (miles per hour). What is the kinetic energy of the goose in joules?
Enter your answer numerically in joules.
Hints
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 21.0 lb (pounds) and is flying at 8.30 miles/h (miles per hour). What is the kinetic energy of the goose in joules?
Enter your answer numerically in joules.
Hints
Explanation / Answer
A)
Apply kinetic energy formula
Ek = 1/2*m*V^2;
m = mass in kg, v velocity in m/s
mass = 21 lb = 21*0.454 kg;= 9.534 kg
V = 8.3 mi/h --> 8.3 * mi /h * 1 h/ 3600 s * 1609 m / mi
V = 3.71043 m/s
E = 1/2*(9.534)(3.71043 ^2)
E = 65.628 J