MCQ on speed, velocity and acceleration are very much important **board exam** like CBSE, ICSE and other competitive exams like **JEE and NEET**. Speed, velocity and acceleration terms are related to the chapter **One dimensional motion** of **kinematics**. Some of the **job exams** also cover this chapter for the selection of the candidates. Therefore, in this article, we are going to discuss more than 20 multiple choice questions on speed velocity and acceleration.

Before this, we need to know the basic things about those physical quantities. Lets begin with their definitions, formulae and other related things.

**Definition of Speed**

Speed is the change in distance per unit change in time. It is the rate of change in **distance travelled**.

So, formula of speed = (distance travelled)÷(time taken to travel that distance). If an object travels **d** distance in time **t**, then speed, {\color{Blue} S=\frac{d}{t}}

**Speed is a scalar quantity**, because both the distance and time are scalar.

**Definition of Velocity**

Velocity is the change in displacement per unit change in time. It is the rate of change in **displacement**.

So, formula of velocity = (displacement)÷(time taken for this displacement). If an object is displaced by **x** in time **t**, then velocity, {\color{Blue} V=\frac{x}{t}}

**Velocity is a vector quantity**. It has both magnitude and direction.

**Definition of acceleration**

Acceleration is defined as the change in velocity per unit change in time. It is the rate of change in velocity. Acceleration is a vector quantity.

Now, we are going to discuss 20 MCQ on speed velocity and acceleration.

**MCQ on speed velocity and acceleration**

**Which of the followings is wrong for a vertical motion against gravity?**

- velocity is always varying
- acceleration never becomes zero
**at maximum height velocity becomes zero, but acceleration is non-zero**- acceleration is constant.

**Which of the followings is true?**

- speed is a vector quantity
- velocity is a scalar quantity
- speed becomes zero when velocity is zero
**speed has the magnitude greater or equal to the velocity.**

**Displacement-time graph for an object moving with constant velocity is a**

- Straight line parallel to time axis
**straight line passing through origin**- elliptical
- straight line parallel to displacement axis

**Click here to see all the graphs related to motion with uniform or constant velocity**.

**The area of velocity-time graph gives**

- displacement
- acceleration
- momentum
- work done

**The area of acceleration-time graph gives**

- displacement
**velocity change**- force
- momentum

**click here to see all the graphs for an object moving with uniform or constant acceleration**.

**Nature of displacement-time curve for an object moving with uniform acceleration is**

- straight line passing through origin
- straight line parallel to time axis
- circular
**elliptical**

**A particle is accelerated by 2 m/s**^{2} from rest. How far will it move after 3 second?

^{2}from rest. How far will it move after 3 second?

- 6 m
**9 m**- 3 m
- 8 m

**The slope of velocity-time graph represents**

- displacement
**acceleration**- force
- Momentum

**What is the nature of the displacement-time graph for an object moving with uniform acceleration?**

- Straight line passing through origin
- Straight line parallel to time axis
**Elliptical**- Straight line with negative slope.

**The acceleration of a free fall body is**

- zero
**9.8 m/s**^{2}- 4.9 m/s
^{2} - infinite

**True or False questions on speed velocity and acceleration**

**A particle can have non-zero speed even if its velocity is zero.**

**True**- False

**Answer:** In a circular motion, when a particle completes a cycle its velocity becomes zero at that moment. But speed remains non-zero.

**A particle can have non-zero acceleration even if its velocity is zero.**

**True**- False

**Answer: **In vertical motion, an object has zero velocity at maximum height. But **gravitational acceleration** always acts on it.

**An object starts its motion from rest. If it has an accelerated motion then its displacement will be proportional to the square of the time.**

**True**- False

**Answer: ** From the formula, S = (ut + 1/2 at^{2}) with u=0.

**The area of velocity-time graph gives the acceleration.**

- True
**False**

**A particle moving with uniform speed in a curved path can have an acceleration.**

**True**- False

**Direction of velocity can be opposite to the direction of acceleration.**

**True**- False

**Hints: **For vertically upward motion, the direction of velocity is upward but the gravitational acceleration is downward.

**If a particle is thrown upward with a speed u then it will fall with the same speed.**

**True**- False

**For vertical motion, the time to reach at maximum height is equal to the time to fall down from maximum height.**

**True**- False

**For an object moving with uniform velocity, the acceleration is zero.**

**True**- False

**The speed of an object is always greater or equal to the velocity of the object**

**True**- False

So, we have discussed more than 20 Multiple choice questions or MCQ on speed velocity and acceleration of the chapter one dimensional motion. If you have any doubt on this topic you can ask me in the comment section. Also, you can ask new questions on this topic.

Thank you!

**Homework:**

**Draw velocity vs time graph for a particle moving with uniform velocity.****If an object covers a semicircular path of radius 2 cm in 2 second then find its speed and velocity.****Write the first equation of kinematics.****Write three differences between speed and velocity.**

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