Lab motion Table E: Average Speeds for Higher Racetrack

Time (Initial) Time (Final) Elapsed Time Average speed

(s) (s) (s) (m/s)

1st ¼ of the Track

2nd ¼ of the Track

3rd ¼ of the Track

Final ¼ of the Track

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

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.

option number c is the right answer.

answer///isobars;