@angstrom Lol, wouldn't it be nice if journalists described people with equations once in a while..."When swinging from the roof, Mr Welch's velocity at a time, t, is given by v=-8sin(2t+5)..." Abusive comment hidden. (Show it anyway.)
"When swinging from the roof, Mr Welch's velocity at a time, t, is given by v=-8sin(2t+5)..."