A Sandbag Is Released from a Rising Air Balloon and Hits

question 47

Multiple Choice

A sandbag is released from a rising air balloon and hits the ground 7 seconds later.From what height was the sandbag dropped from if at the moment of release the balloon was traveling upward at 3 m/s.

• A)219 m
• B)240 m
• C)459 m
• D)261 m
• E)55 m

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Definitions:

Pretest-Posttest

A research design that measures participants on the dependent variable before and after exposure to an intervention or treatment to assess its effects.

Solomon Four-Group

An experimental design involving four groups to measure the effects of a treatment while controlling for pretesting.

Pretest

An initial test or assessment conducted before the main test or experiment to evaluate participants' baseline abilities, knowledge, or attitudes.

Pretest-Posttest

A research design that measures the effect of an intervention by comparing conditions before and after the intervention is applied.