The goose has a mass of 20.5 lblb (pounds) and is flying at 7.80 miles/hmiles/h (miles per hour). what is the kinetic energy of the goose in joules?

The Kinetic energy of the goose = 56.071 J    

Explanation:

Kinetic Energy: This can be defined as the energy of a body in motion.

Mathematically, it can be expressed as

Ek = 1/2mv² Equation 1.

Where Ek = kinetic energy of the goose, m = mass of the goose, v = velocity of the goose.

Given: m = 20.5 lb, and v = 7.8 miles/h.

Conversion: (i) If 1 lb = 0.45 kg,

                    then,  20.5 lb = 0.45(20.5) = 9.225 kg.

          Also,   (ii)  If 1 mile/h = 0.447 m/s

              then,      7.8 miles/h = 0.447×7.8 = 3.4866 m/s

Therefore, m = 9.225 kg, v = 3.4866 m/s

Substituting into equation 1

Ek = 1/2(9.225)(3.4866)²      

Ek = 4.6125×12.1564

Ek = 56.071 J.

Thus the Kinetic energy of the goose = 56.071 J    

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

this could be newton#'s law of cooling. the cooling curve is exponential