a car travels up a hill at a constant speed of 42 km/h and returns down the hill at a constant speed of 73 km/h. calculate the average speed for the round trip.

falling water hydro = water .. spectcular places these plants are

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.