Determina la velocidad de un avión que recorre 459 km en 67 min

Zirconium has an hcp crystal structure and a density of 6.51 g/cm3. (a) what is the volume of its unit cell in m3? (b) if the c/a ratio is 1.593, compute the values of c and a.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest