Vector A with rightwards arrow on top = -1.00i + (-2.00)j and vector B with rightwards arrow on top = 3.00i+ 4.00j. What are the magnitude and direction of vector C with rightwards arrow on top = 3.00A with rightwards arrow on top + 2.00B with rightwards arrow on top?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?