derry area school district / overview · the driver of a truck parked on a mountain road the air...

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Page 1: Derry Area School District / Overview · The driver of a truck parked on a mountain road the air horn a quick blast toward a rock cliff 0.760 km If he hears the echo 4.50 s later,
Page 2: Derry Area School District / Overview · The driver of a truck parked on a mountain road the air horn a quick blast toward a rock cliff 0.760 km If he hears the echo 4.50 s later,
Page 3: Derry Area School District / Overview · The driver of a truck parked on a mountain road the air horn a quick blast toward a rock cliff 0.760 km If he hears the echo 4.50 s later,
Page 4: Derry Area School District / Overview · The driver of a truck parked on a mountain road the air horn a quick blast toward a rock cliff 0.760 km If he hears the echo 4.50 s later,