Assume the acceleration of the object is a(t) = −32 feet per second per second. (neglect air resistance.) with what initial velocity must an object be thrown upward (from ground level) to reach the top of a national monument (560 feet)? (round your answer to three decimal places.)

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.