Although ungraceful on land, walruses are fine swimmers. They normally swim at 5.00 Km/h, and for short periods of time are capable of reaching speeds of nearly 40.0Km / h If a walrus swimming at a speed of 40.0Km / h has a mass of 6.50*10^ 2 kg . what is its kinetic energy? (Don't forget your conversion m/s)

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

What is a possible result of higher air temperature caused by global warming

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.