Abird watcher meanders through the woods, walking 1.46 km due east, 0.123 km due south, and 4.24 km in a direction 52.4° north of west. the time required for this trip is 1.285 h. determine the magnitudes of the bird watcher's (a)displacement and (b) average velocity.

(a). The displacement is 3.11 m.

(b). The average velocity is 2.42 km/hr.

Explanation:

Given that,

A bird watcher meanders through the woods, walking 1.46 km due east, 0.123 km due south, and 4.24 km in a direction 52.4° north of west.

(a). We need to calculate the displacement

Using Pythagorean theorem

(b). We need to calculate the average velocity

Using formula of average velocity

Where, D = displacement

T = time

Put the value into the formula

Hence, (a). The displacement is 3.11 m.

(b). The average velocity is 2.42 km/hr.

the answer is b, have negligible mass

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.