Momentum Quiz (1) Physics AS Level
Cambridge
AS & A Level
Physics (9702)
فروردین
2010
شامل مباحث:
Chapter 6: Momentum
تعداد سوالات: 20
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
25 دقیقه
پیش نمایش صفحه اول فایل
The force resisting the motion of a car is taken as being proportional to the square of the car’s speed. The magnitude of the force at a speed of $20m{s^{ - 1}}$ is 800 N.
What effective power is required from the car’s engine to maintain a steady speed of $40m{s^{ - 1}}$?