5th grade science
posted by fithgrader .
science-well im learning about the diffence between a vascular and nonvascular plant and i don't get it so
if you can help.thanks 5th grader
When a boy land on a trampoline, he pushes down on the trampoline. What for is the reaction force?
A. gravity pulling the boy down
B.the boy pushing down
C.the friction between the boy and the trampoline
D. the trampoline pushing upward
Check these sites. The first one is really good about vascular plants. The second site explains nonvascular plants.
thanks these web sites helped
A. Gravity pulling the boy down
A car strikes a guardrail and the impact was 20,000 newtons. The car weighed 1,700 kilograms, how fast was it moving in meters per second (m/s2)?
C because he just push down