Jack applies a force of 30 and move 90 kg box. what is the acceleration of the box?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Your science teacher brings in a speaker to talk to your class about climate change. during the session, students ask a few questions. which questions are related to the current evidence on climate change