Question

Fast moving vehicles are designed to have streamlined shapes.

• A. Brand new tyre
• B. Old tyre

Answer 1

The correct option is A

Brand new tyre

All fluids exert frictional or drag force on objects moving through them which opposes motion of the object. Greater the speed of the vehicle, larger is the drag experienced by them. To minimize this drag force, vehicles are designed to have streamlined shapes. This helps in reducing drag force by allowing air to easily move past them.