Question

if a car is making a turn at a high rate of speed, which force is necessary to safely stay on the road?
a. friction
b. buoyancy
c. momentum
d. inertia

Explanation:

When a car makes a turn at high speed, it needs a centripetal force. On a level road, the frictional force between the tires and the road provides this centripetal force. Without sufficient friction (e.g., on an icy road with low friction), the car would not be able to stay on the road during the turn. Buoyancy is related to objects in fluids (like water) and how they float. Momentum is \(p = mv\) (mass times velocity). Acceleration is \(a=\frac{\Delta v}{\Delta t}\) (change in velocity over time). But for a car turning on a road, the key force is friction.

Answer:

A. friction