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5. A 35 kg child dives on a sled with a force of 200 N. Ignoring the mass of the sled and the effects of
friction, calculate the acceleration of the child. Report your numerical answer to the nearest tenth and
include units.
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Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration