Motion in a Straight Line Quiz - CBSE Class 11 Science

Free practice quiz: Motion in a Straight Line (CBSE Class 11 Science). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 11 Science practice quiz has 18 multiple-choice questions on Motion in a Straight Line, and 18 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. A car moves from rest to 20 m/s in 10 seconds. What is its acceleration?

   1. 0 m/s²
   2. 1 m/s²
   3. 2 m/s²
   4. 20 m/s²
   Show answer

   Answer: C. 2 m/s²

   Acceleration is the change in velocity divided by the change in time. (20 m/s - 0 m/s) / 10 s = 2 m/s²

2. If the displacement of a body is zero, what can we conclude about its distance traveled?

   1. Distance traveled is also zero
   2. Distance traveled is non-zero
   3. Distance traveled can be zero or non-zero
   4. Cannot be determined
   Show answer

   Answer: C. Distance traveled can be zero or non-zero

   Displacement is a vector quantity (magnitude and direction). If the body returns to its starting point, the displacement is zero but it has still traveled a non-zero distance.

3. A body moving with a uniform velocity has:

   1. zero acceleration
   2. constant acceleration
   3. variable acceleration
   4. increasing acceleration
   Show answer

   Answer: A. zero acceleration

   Uniform velocity implies no change in velocity, hence zero acceleration.

4. Explain the concept of relative velocity with an example.

   1. It's the velocity of an object relative to another object. Example: A car moving at 60 km/hr relative to the ground.
   2. It is always zero. Example: Two cars moving at 60km/hr relative to each other.
   3. It is always the velocity of the object relative to the ground. Example: A bird flying.
   4. It's the velocity of the object relative to the observer. Example: Two cars moving at 60km/hr relative to each other.
   Show answer

   Answer: A. It's the velocity of an object relative to another object. Example: A car moving at 60 km/hr relative to the ground.

   Relative velocity considers the motion of one object as observed from another moving object.

5. A particle starts from rest and moves with uniform acceleration. After t seconds, it covers a distance s. What is the relation between s, a and t?

   1. s = 1/2at²
   2. s = at²
   3. s = 2at²
   4. s = at
   Show answer

   Answer: A. s = 1/2at²

   This is a standard equation of motion for uniform acceleration starting from rest.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What is the distance covered by a body moving with a uniform velocity of 5 m/s in 20 seconds?
2. A ball is thrown vertically upwards with an initial velocity of 20 m/s. Neglecting air resistance, what is its velocity at the highest point?
3. What does the slope of a velocity-time graph represent?
4. A body is moving with uniform acceleration. Which of the following is NOT constant?
5. The area under a velocity-time graph represents:
6. Derive the equation of motion: v = u + at
7. A projectile is launched at an angle. Ignoring air resistance, which component of its velocity remains constant?
8. A stone is dropped from a height h. Ignoring air resistance, what is its velocity just before it hits the ground?
9. Two objects are thrown vertically upwards with the same initial velocity but different masses. Ignoring air resistance, which object reaches a greater height?
10. Describe the motion of a body under the influence of constant resistive force.
11. Derive the equation s = ut + 1/2at² from the basic definitions of velocity and acceleration.
12. Explain the concept of instantaneous velocity and how it differs from average velocity.
13. A rocket is launched vertically upwards with an initial velocity and experiences a constant upward acceleration until it runs out of fuel. Describe the motion after the fuel runs out.

More quizzes

• Properties of Bulk Matter▶ Play
• Thermodynamics▶ Play
• Units and Measurement▶ Play
• Work, Energy and Power▶ Play
• Force and Laws of Motion▶ Play
• Gravitation▶ Play

Browse all Physical Science quizzes

More to play