MULTI STAGE MOTION

MS-01

A car starts from rest and accelerates uniformly for 5 s. It then moves with constant velocity for the next 10 s. During the second stage, its acceleration is

• A. Positive
• B. Negative
• C. Zero
• D. Cannot be determined

MS-02

A particle moves with constant velocity for 8 s and then begins to accelerate. The velocity–time graph changes from

• A. Curved to horizontal
• B. Horizontal to inclined
• C. Vertical to horizontal
• D. Inclined to vertical

MS-03

A car accelerates uniformly and then brakes uniformly to rest. The maximum speed occurs

• A. At the start
• B. During braking
• C. At the transition between the two stages
• D. At the end

MS-04

A stone is projected vertically upward. The ascent and descent represent

• A. The same motion stage
• B. Two different motion stages
• C. No motion stage
• D. Uniform motion

MS-05

A train remains at rest for 5 minutes and then starts moving. During the first stage, its velocity is

• A. Increasing
• B. Constant and non-zero
• C. Zero
• D. Negative

MS-06

A particle accelerates for 4 s and then continues with the velocity acquired. Which quantity changes abruptly at the stage boundary?

• A. Position
• B. Velocity
• C. Acceleration
• D. Displacement

MS-07

A ball falls freely, strikes the ground, and rebounds upward. The reversal occurs

• A. At the highest point after rebound
• B. At ground contact
• C. During free fall
• D. Before reaching the ground

MS-08

A particle moves with acceleration +2 m/s² for 5 s and then with acceleration −2 m/s². The slope of the velocity–time graph during Stage-2 is

• A. Positive
• B. Negative
• C. Zero
• D. Infinite

MS-09

A car accelerates uniformly and later moves with constant velocity. Which stage contributes acceleration?

• A. First stage only
• B. Second stage only
• C. Both stages
• D. Neither stage

MS-10

A runner waits for 10 s before starting a race. During the waiting period, his displacement relative to the start line is

• A. Increasing
• B. Decreasing
• C. Constant
• D. Negative

MS-11

A particle moves with one constant velocity and then suddenly with another constant velocity. Which graph shows the two stages most clearly?

• A. Horizontal acceleration–time graph
• B. Position–time graph with a change in slope
• C. Velocity–time graph with the same slope throughout
• D. Constant position graph

MS-12

A car accelerates and then brakes. The instant acceleration changes sign corresponds to

• A. Minimum speed
• B. Maximum speed
• C. Zero displacement
• D. Zero velocity

MS-13

A cyclist moves with constant speed and later accelerates. Which quantity must change between the two stages?

• A. Position
• B. Velocity
• C. Time
• D. Mass

MS-14

A ball falls, rebounds, and then rises upward. The motion contains

• A. One stage
• B. Two stages
• C. Three stages
• D. No stages

MS-15

A car accelerates for 5 s and then moves uniformly for 20 s. Most of the journey time is spent in

• A. Accelerated stage
• B. Uniform stage
• C. Both equally
• D. Cannot be determined

Multi-Stage Motion Master Snapshot

What You Have Learned

• Real motion often consists of multiple stages.
• Stage boundaries are critical for correct analysis.
• Acceleration can change abruptly between stages.
• Velocity does not necessarily change abruptly.
• Graphs reveal stage transitions clearly.
• Most mistakes occur when stage information is mixed incorrectly.

Challenge Complete

You have completed the Multi-Stage Motion 20-Second Physics Challenge.