A force acts on a 3kg particle is in such a way that the position of the particle as a function of time is given by x = 3t - 4t^. What is
the work done by the force during the first 4 seconds?​

How are calculation for velocity and speed different

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring