Alex stands on the edge of shs building with a H=101.2m , dropping a tennis ball straight down horizontal , with a velocity of 25m/s on the horizontal ground , Arval is speeding up to catch the ball 4m/s trying to catch the ball. if lester stands 1.2 , and start at x meters away from the drop point , what does x need to be for him to successfully catching the ball?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k

If a simple machine reduces the strength of a force, what must be increased?