An automobile accelerates 1.77 m/s/s over 6.00 s to reach freeway speed at the end of an entrance ramp. If the car's final speed is 88.0 km/h, what is the initial speed when it began accelerating?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).