A car with a mass of 1250 kg travels at 2.24 m/s and bumps into a stopped car with a mass of 1.300 kg. After the collision, the two cars stick together and move forward. How fast will they both move forward? Round your answer to two decimal places. 1.14 ms
055 m
0.57 mis
110 ms

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?