A6 kg block is sliding down a horizontal frictionless surface with a constant speed of 5 m/s. it then slides down a frictionless ramp to another horizontal frictionless surface which is 2 m lower than the first horizontal surface. what is the constant speed with which the block is now sliding along this new horizontal surface?

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Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s