According to the guinness book of world records, the longest home run ever measured was hit by roy "dizzy" carlyle in a minor league game. the ball traveled 188 m (618 ft) before landing on the ground outside the ballpark.
part a
assuming the ball's initial velocity was 44? above the horizontal and ignoring air resistance, what did the initial speed of the ball need to be to produce such a home run if the ball was hit at a point 0.9 m(3.0 ft) above ground level? assume that the ground was perfectly flat.
express your answer using two significant figures.
part b
how far would the ball be above a fence 3.0 m (10 ft) high if the fence was 116 m (380 ft) from home plate?
express your answer using two significant figures.

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic