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Motion: Uniform, Non-Uniform, Speed and Average Speed: 29 MCQs with answers

All 29 multiple-choice questions from this kit, free and with no sign-up.

Full kit · everything Flashcards · 30 Quick Revision · 17

Warm-up · 16 questions

Q1. An object covers equal distances in equal intervals of time. What type of motion is this?

Beginner
A Random motion B Circular motion C Non-uniform motion D Uniform motion
Show answer & explanation

Uniform motion

Equal distances in equal time intervals is the definition of uniform motion, so the speed stays constant.

Q2. A bus covers unequal distances in equal intervals of time. Its motion is:

Beginner
A Non-uniform motion B Stationary motion C Uniform motion D Constant-speed motion
Show answer & explanation

Non-uniform motion

Unequal distances in equal time intervals means non-uniform motion — the speed is changing.

Q3. Which of these is the standard example of uniform motion?

Beginner
A A car on a clear straight highway B A bus stopping at every stop C A car in city traffic D A cyclist weaving through a market
Show answer & explanation

A car on a clear straight highway

A car cruising a clear straight highway at a steady speed covers equal distances in equal time intervals.

Q4. Which of these is the standard example of non-uniform motion?

Beginner
A A fan rotating at a steady rate B A car on an empty straight highway C A train at constant speed on a straight track D A car moving in city traffic
Show answer & explanation

A car moving in city traffic

City traffic forces constant changes in speed, so the car covers unequal distances in equal time intervals.

Q5. A distance–time table shows the distance column increasing by exactly 8 m every 10 s. What is the speed?

Beginner
A $0.8\ \text{m/s}$ B $8\ \text{m/s}$ C $1.25\ \text{m/s}$ D $80\ \text{m/s}$
Show answer & explanation

$0.8\ \text{m/s}$

Speed $= 8/10 = 0.8\ \text{m/s}$, and since the gap is constant the motion is uniform.

Q6. **Uniform motion** requires equal distances in equal time intervals, so the speed stays constant; **non-uniform motion** has unequal distances in equal time intervals.

Beginner
A True B False
Show answer & explanation

True

**Uniform motion** requires equal distances in equal time intervals, so the speed stays constant; **non-uniform motion** has unequal distances in equal time intervals.

Q7. What is uniform motion?

Beginner
A Equal distances in unequal time intervals B Unequal distances in equal time intervals C Variable distances in variable time intervals D Equal distances in equal time intervals
Show answer & explanation

Equal distances in equal time intervals

Uniform motion is defined as covering equal distances in equal intervals of time.

Q8. What type of motion does a car stuck in traffic represent?

Beginner
A Accelerated motion B Constant speed motion C Non-uniform motion D Uniform motion
Show answer & explanation

Non-uniform motion

A car stuck in traffic covers unequal distances in equal time intervals, indicating non-uniform motion.

Q9. What does a distance-time table with equal time gaps but unequal distance gaps indicate?

Beginner
A Uniform motion B Constant speed C Deceleration D Non-uniform motion
Show answer & explanation

Non-uniform motion

Unequal distance gaps in equal time intervals confirm the object is in non-uniform motion.

Q10. What is the formula for average speed?

Beginner
A Total distance divided by total time B Speed multiplied by time C Distance divided by time D Total time divided by total distance
Show answer & explanation

Total distance divided by total time

Average speed is calculated as total distance divided by total time.

Q11. Which of the following is a characteristic of non-uniform motion?

Beginner
A Straight path B Variable speed C Equal distances in equal time D Constant speed
Show answer & explanation

Variable speed

Non-uniform motion is characterized by variable speed, as distances covered are unequal in equal time intervals.

Q12. What does it mean if a vehicle's average speed is 60 km/h?

Beginner
A The vehicle was stationary B The vehicle moved non-uniformly C The vehicle had a speed of 60 m/s D The vehicle moved uniformly
Show answer & explanation

The vehicle moved non-uniformly

An average speed of 60 km/h does not guarantee uniform motion; the vehicle may have moved non-uniformly.

Q13. What is the key requirement for uniform motion?

Beginner
A Variable speed B Constant distance C Equal time intervals D Equal distances covered in equal time intervals
Show answer & explanation

Equal distances covered in equal time intervals

Uniform motion requires that equal distances are covered in equal time intervals.

Q14. What is the first step in solving speed problems involving different units?

Beginner
A Estimate time B Use distance as the first variable C Calculate average speed D Convert units before calculating
Show answer & explanation

Convert units before calculating

The first step is to convert units to ensure consistency before performing calculations.

Q15. In the speed-distance-time triangle, what does the formula $Speed = \frac{Distance}{Time}$ imply?

Beginner
A Speed is independent of distance B Distance is always greater than speed C Time is constant D Speed is the ratio of distance to time
Show answer & explanation

Speed is the ratio of distance to time

The formula indicates that speed is determined by the ratio of distance traveled to the time taken.

Q16. What is a common mistake when interpreting average speed?

Beginner
A Using the wrong units B Calculating it incorrectly C Assuming it indicates uniform motion D Ignoring total distance
Show answer & explanation

Assuming it indicates uniform motion

A common mistake is to assume that average speed indicates uniform motion, which is not necessarily true.

Building up · 8 questions

Q17. A car covers 60 km in the first hour, 70 km in the second and 50 km in the third. What is its average speed?

Intermediate
A $180\ \text{km/h}$ B $70\ \text{km/h}$ C $60\ \text{km/h}$ D $50\ \text{km/h}$
Show answer & explanation

$60\ \text{km/h}$

Average speed $= (60+70+50)/3 = 180/3 = 60\ \text{km/h}$.

Q18. A car covers 60 km, 70 km and 50 km in three successive hours. What type of motion does it show?

Intermediate
A Non-uniform motion B Motion that cannot be classified C Uniform motion D Motion with zero speed
Show answer & explanation

Non-uniform motion

The distances covered each hour are unequal, so the motion is non-uniform even though the average speed is 60 km/h.

Q19. A student calculates an average speed of 60 km/h for a trip and concludes the motion was uniform. Why is this reasoning wrong?

Intermediate
A Uniform motion needs no calculation at all B An average can come from changing speeds C Average speed cannot be calculated in km/h D Average speed is always greater than actual speed
Show answer & explanation

An average can come from changing speeds

Average speed only gives the overall pace. Uniform motion requires equal distances in equal time intervals, which an average does not prove.

Q20. Convert $72\ \text{km/h}$ into m/s.

Intermediate
A $20\ \text{m/s}$ B $18\ \text{m/s}$ C $25.92\ \text{m/s}$ D $72\ \text{m/s}$
Show answer & explanation

$20\ \text{m/s}$

$72 \times \frac{5}{18} = 20\ \text{m/s}$.

Q21. A horse runs at $18\ \text{m/s}$ and a train moves at $72\ \text{km/h}$. Which is faster and by how much?

Intermediate
A The horse, by $2\ \text{m/s}$ B The train, by $2\ \text{m/s}$ C Both are equal in speed D The train, by $18\ \text{m/s}$
Show answer & explanation

The train, by $2\ \text{m/s}$

The train is $72 \times \frac{5}{18} = 20\ \text{m/s}$, which is $2\ \text{m/s}$ faster than the horse's $18\ \text{m/s}$.

Q22. A train covers 180 km in 3 hours. What is its speed in m/s?

Intermediate
A $16.67\ \text{m/s}$ B $30\ \text{m/s}$ C $60\ \text{m/s}$ D $10\ \text{m/s}$
Show answer & explanation

$16.67\ \text{m/s}$

Speed $= 180/3 = 60\ \text{km/h}$, and $60 \times \frac{5}{18} = 16.67\ \text{m/s}$.

Q23. A train travels at $2.5\ \text{m/s}$ and covers 360 km. How much time does it take?

Intermediate
A $144$ hours B $2$ hours C $4$ hours D $6$ hours
Show answer & explanation

$4$ hours

Distance $= 360000\ \text{m}$, so time $= 360000/2.5 = 144000\ \text{s} = 4$ hours.

Q24. A vehicle covers the first 500 m at 10 m/s and the next 500 m at 5 m/s. How much time has it used so far?

Intermediate
A $100\ \text{s}$ B $50\ \text{s}$ C $200\ \text{s}$ D $150\ \text{s}$
Show answer & explanation

$150\ \text{s}$

First leg $= 500/10 = 50\ \text{s}$; second leg $= 500/5 = 100\ \text{s}$; total $= 150\ \text{s}$.

Topper level · 5 questions

Q25. A vehicle must complete a 2 km journey in 200 s. It covers the first 1000 m in 150 s. What speed is needed for the remaining 1000 m?

Advanced
A $10\ \text{m/s}$ B $50\ \text{m/s}$ C $20\ \text{m/s}$ D $5\ \text{m/s}$
Show answer & explanation

$20\ \text{m/s}$

Remaining time $= 200 - 150 = 50\ \text{s}$; remaining distance $= 1000\ \text{m}$; speed $= 1000/50 = 20\ \text{m/s}$.

Q26. For the same 2 km trip completed in 200 s, what is the vehicle's average speed?

Advanced
A $10\ \text{m/s}$ B $15\ \text{m/s}$ C $20\ \text{m/s}$ D $0.1\ \text{m/s}$
Show answer & explanation

$10\ \text{m/s}$

Average speed $= 2000/200 = 10\ \text{m/s}$, even though no single leg was travelled at exactly 10 m/s except the first.

Q27. A vehicle completes a 2 km journey in 200 s, covering the first 1000 m in 150 s and the second 1000 m in an unknown time. What speed must it maintain for the second leg to finish on time?

Advanced
A 25 m/s B 15 m/s C 10 m/s D 20 m/s
Show answer & explanation

20 m/s

To finish the journey in 200 s, the vehicle has 50 s left after the first leg. The remaining distance is 1000 m, so the required speed is $\frac{1000\text{ m}}{50\text{ s}} = 20\text{ m/s}$.

Q28. A distance-time table shows the following data: | Time (s) | Distance (m) | |---|---| | 0 | 0 | | 5 | 12 | | 10 | 20 | | 15 | 30 | | 20 | 40 | What type of motion does this table represent?

Advanced
A Uniform motion B Decelerated motion C Non-uniform motion D Accelerated motion
Show answer & explanation

Uniform motion

The distance increases by 8 m for every 5 s interval, indicating constant speed. Thus, this represents uniform motion.

Q29. A car travels 60 km in the first hour, 70 km in the second hour, and 50 km in the third hour. If the total time taken is 3 hours, what is the average speed, and does it indicate uniform motion?

Advanced
A 70 km/h; Yes B 60 km/h; No C 70 km/h; No D 60 km/h; Yes
Show answer & explanation

60 km/h; No

The average speed is $\frac{60 + 70 + 50}{3} = 60\text{ km/h}$. However, since the distances are not equal for each hour, it does not indicate uniform motion.

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