Acar travels from stop a to stop b with a speed of 30 km/h and then returns back to a with a speed of 50 km/h. find -> (i) displacement of the car. (ii) distance travelled by the car. (iii) average speed of the car.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?