Lonnie pitches a baseball of mass 0.20 kg. the ball arrives at home plate with a speed of 40 m/s and is batted straight back to lonnie with a return speed of 60 m/s. if the bat is in contact with the ball for 0.050 s what is the impulse experienced by the ball? a. 360 n. s b. 20 n. s c. 400 n. s d. 9.0 n. s

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s

Asap time is ! best answer gets compose at least one well-developed paragraph on the following: define the term concurrent powers, and give an example of a concurrent power of government.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?