Chapter 3, Problem 58A

(a)

To determine

To complete:The problem so that it can be solved for the given concept‘Acceleration’.

Explanation of Solution

Introduction:

The change of displacementwith respect to time is known as velocity.

The change of velocity with respect to time is called acceleration.

Explanation: 

To calculate the acceleration of any moving body velocity of body and time of travel of body must be given in problem so the sentence can be completed like this

“Person A is playing basketball and throw the ball towards basket with speed 15m/s the ball bounces backfrom board with a speed of 16 m/s within 0.03 s. What is acceleration of the basketball during this interval of time?”

(b)

To determine

To complete:The problem so that it can be solved for the given concept ‘speed’.

Explanation of Solution

Introduction:

The average speed of object is ratio of total distance covered by the object with respect to time. It is scalar quantity.

Explanation:  To calculate speed of any object distance travelled by the object within specific interval of time must be given.So, the sentence can be completed like this,

“Person A is playing basketball and moves in straight line 2m while dribbling the basketball within 5 s. Calculate average speed during the move?”