Standing on a bridge, you throw a stone straight upward. The stone hits a stream28.3 m below the point at which you release it2.70 s later. What is the speed of the stone (in m/s) just before it hits the water? Please do not include any units in your answer below. Type in only the numerical result. If you include units, your answer will be marked as incorrect.

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.