The total energy of a 0.050 kg object travelling at 0.70 c is:

a) 2.10 × 107 j

b) 3.06 × 107 j

c) 2.46 × 1015 j

d) 6.30 × 1015 j

e) 8.82 × 1015 j

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.