Abaseball pitcher in good form can throw a baseball that attains a speed of 97.0 mi/h in a distance of 1.30 m. assume that the ball starts from rest and its mass is 0.150 kg. (a) determine the magnitude of the average force exerted on the ball. (b) how would the pitcher need to alter the required force to reach the same speed if the mass of the ball is decreased. the pitcher would need to increase the force. the pitcher would need to decrease the force. the pitcher would not need to change the force.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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