A skateboarder is jumping down a set of stairs. Assume the stairs are above the ground by h = 3.94 m, and are l = 3.15 m long. The skateboarder is heading toward the top of the stairs with a speed of 9.15 m/s, and they simply roll off the top - no jumping in the air. How far from the bottom of the stairs will they land?

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

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

How can you measure the amplitude of a longitudinal wave?