It is isn't good to use the local units like Mana , Pathi etc in international measurement. why?​

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

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

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?