Question

1. choose the correct words form the following list to describe the motion during each segment of the journey to fill in the blanks. accelerating decelerating constant speed at rest segment o - a the bus is _, its speed changes from 0 to 10 m/s in 5 seconds. segment a - b the bus is moving at a _ of 10 m/s for 5 seconds. segment b - c the bus is _, it is slowing down from 10 m/s to rest in 3 seconds. egment c - d the bus is _, it has stopped. gment d - e the bus is _, it is gradually reasing in speed

Explanation:

• Segment O - A: When the speed changes from \(0\) to \(10\ m/s\), the bus is accelerating. Acceleration is the rate of change of velocity, and an increase in speed indicates acceleration.
• Segment A - B: Moving at a constant value of \(10\ m/s\) for a period of time means the bus is moving at a constant speed.
• Segment B - C: Slowing down from \(10\ m/s\) to rest means the velocity is decreasing, which is deceleration.
• Segment C - D: The bus has stopped, so it is at rest.
• Segment D - E: The speed is gradually increasing, which is acceleration.

Answer:

• Segment O - A: Accelerating
• Segment A - B: Constant speed
• Segment B - C: Decelerating
• Segment C - D: At rest
• Segment D - E: Accelerating