The argument against your claim (what the other side would say if they disagreed with your claim.) is: Group of answer choices

counterclaim

author's purpose

opinion

argument

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Am i correct on these two physics questions?