The equation for momentum is p = mv, where p is momentum, m is mass, and v is velocity. The units for momentum are kg•m/s.

a. What is the momentum of an object that has a mass of 2 kg and a velocity of
14 m/s? (2 points)

b. What is the mass of an object that has a momentum of 35 kg•m/s and a
velocity of 3 m/s? (2 points)

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?