Forces and machines: Downhill skier/ Many authors
Tác giả : Many authors
Nhà xuất bản : Macmillan
Nơi xuất bản : New York
Mô tả vật lý : 90p; 25cm
Chủ đề : 1. Energy. 2. English. 3. Friction. 4. Gravity. 5. Hindrance. 6. Interactions. 7. Levers. 8. Machines. 9. Momentum. 10. Physics. 11. Science. 12. Systems.
Thông tin chi tiết
| Tóm tắt : | This book introduces to forces and machines, Are friction and gravity always a hindrance ? How does energy change ? Does work gain momentum if the power increases? How do levers help people do work ? How do inclined planes help people do work ? |