A6.7 kg object moves with a velocity of 8 m/s. what's its kinetic energy? a. 26.8 j b. 214.4 j c. 167.5 j d. 53.6 j

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

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