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23 Nov 2019
Consider a railroad bridge over a highway.
A train passing over the bridge dislodges a
loose bolt from the bridge, which proceeds to
fall straight down and ends up breaking the
windshield of a car passing under the bridge.
The car was 32 m away from the point of
impact when the bolt began to fall down;
unfortunately, the driver did not notice it and
proceeded at constant speed of 28 m/s.
How high is the bridge?
Consider a railroad bridge over a highway.
A train passing over the bridge dislodges a
loose bolt from the bridge, which proceeds to
fall straight down and ends up breaking the
windshield of a car passing under the bridge.
The car was 32 m away from the point of
impact when the bolt began to fall down;
unfortunately, the driver did not notice it and
proceeded at constant speed of 28 m/s.
How high is the bridge?
Jean KeelingLv2
15 Oct 2019
