An automobile having a mass of 941 kg is driven into a brick wall in a safety test. the bumper behaves like a spring of constant 2.37 × 106 n/m and compresses 1.61 cm as the car is brought to rest what was the speed of the car before impact, assuming no energy is lost during impact with the wall? answer in units of

Why there is no inductive reactance in dc circuits

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

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?