An ostrich can run at speeds of up to 72 km/h. how long (in seconds) will it take an ostrich to run 1.5 km at this top speed?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Rohit is trying to tune an instrument

What object a collides with object b and bounces back its final momentum is?