Chapter 4, Problem 45A

Correct your friend who says, 'The dragster rounded the curve at a constant velocity of 100 km/h.'

To determine

To Correct: The given statement.

Answer to Problem 45A

The correct statement is “The dragster rounded the curve at a constant speed of $100\text{km/h}$ ”.

Explanation of Solution

Introduction:

Speed combined with the direction of motion is termed as velocity.

When a dragster moves in a circle, then its speed will remain the same. However, its direction is continuously changing. Thus, its speed remains constant when moving in a circle but its velocity changes continuously.

Conclusion:

Hence, the correct statement would be that the dragster rounded the curve at a constant speed of $100\text{km/h}$ .