Which of the following could not be a unit of acceleration?
- A$\mathrm{km} / \mathrm{s}^2$
- B$\mathrm{cms}^{-2}$
- ✓$\mathrm{km} / \mathrm{s}$
- D$\mathrm{m} / \mathrm{s}^2$
Answer: C.
View full solution →Question types
Motion question types
154 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
154
Questions
6
Question groups
5
Question types
01
M.C.Q. [1 M]
26 Q→02Fill in the blank
10 Q→03Do as directed; [1 M ]
42 Q→04Que-Ans (Each of 2 Mark )
39 Q→05Que-Ans (Each of 3 Mark )
22 Q→06Que-Ans (Each of 5 Mark )
15 Q→Sample Questions
Motion questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Four cars $A, B, C$ and $D$ are moving on a levelled, straight road. Their distance-time graphs are shown in the given figure. Which of the following is the correct statement regarding the motion of these cars$?$
- ACar $A$ is faster than car $D.$
- ✓Car $B$ is the slowest.
- CCar $D$ is faster than the car $C.$
- DCar $C$ is the slowest.
Answer: B.
View full solution →When a car runs on a circular track with a uniform speed, its velocity is said to be changing. This is because:
- AThe car has a uniform acceleration.
- BThe direction of car varies continuously.
- CThe car travels unequal distances in equal time intervals.
- ✓The car travels equal distances in unequal time intervals.
Answer: D.
View full solution →The slope of a speed-time graph gives:
- ADistance travelled.
- BVelocity.
- ✓Acceleration.
- DDisplacement.
Answer: C.
View full solution →$50.$ Which of the following can sometimes be 'zero' for a moving body$?$
- Average velocity.
- Distance travelled.
- Average speed.
- Displacement.
- Aonly $(i)$
- B$(i)$ and $(ii)$
- ✓$(i)$ and $(iv)$
- Donly $(iv)$
Answer: C.
View full solution →Fill in the blanks with suitable words: A motorcycle has a steady _________ of $3m/s^2$. This means that every __________ its _________ increases by __________.
View full solution →Fill in the following blanks with suitable words: If a body moves with uniform velocity, its acceleration is ________.
Fill in the following blanks with suitable words: The slope of a speed-time graph of a moving body gives its ________.
Fill in the blanks with suitable words: Acceleration is the rate of change of __________ It is measured in ___________.
Fill in the following blanks with suitable words: The slope of a distance-time graph indicates ______ of a moving body.
A satellite goes round the earth in a circular orbit with constant speed. Is the motion uniform or accelerated? This photograph shows a man-made 'communication satellite' going round the earth in a circular orbit (or circular path). We can see the dish antennae and solar panels (made of solar cells) clearly in this photograph. This photograph shows a watch. The tip of seconds 'hand of this watch moves rapidly on the dial of the watch. The tips of minutes' hand and hours' also move on the dial but they move slowly.
Write the formula for acceleration. Give the meaning of each symbol which occurs in it.
Change the speed of $6\ m/s$ into km/h.
View full solution →State whether distance is a scalar or a vector quantity.
What type of motion is represented by the tip of the ‘seconds’ hand’ of a watch? Is it uniform or accelerated?
Bus $X$ travels a distance of $360\ km$ in $5$ hours whereas bus $Y$ travels a distance of $476\ km$ in $7$ hours. Which bus travels faster?
View full solution →What type of motion, uniform or non-uniform, is exhibited by a freely falling body? Give reason for your answer.
Draw a velocity-time graph to show the following motion: A car accelerates uniformly from rest for $5s$ ; then it travels at a steady’ velocity for $5s.$
View full solution →A body with an initial velocity x moves with a uniform acceleration y. Plot its velocity-time graph.
State an important characteristic of uniform circular motion. Name the force which brings about uniform circular motion.
A motorcyclist drives from place $A$ to $B$ with a uniform speed of $30\ km\ h^{-1}$ and returns from place $B$ to $A$ with a uniform speed of $20\ km\ h^{-1}.$ Find his average speed.
View full solution →What is meant by the term ‘acceleration’ State the $SI$ unit of acceleration.
View full solution →A body travels a distance of $3\ km$ towards East, then $4\ km$ towards North and finally $9\ km$ towards East.
View full solution →- What is the total distance travelled?
- What is the resultant displacement?
A body is moving uniformly in a straight line with a velocity of $5\ m/s$. Find graphically the distance covered by it in $5$ seconds.
View full solution →If a sprinter runs a distance of $100$ metres in $9.83$ seconds, calculate his average speed in $km/h$.
View full solution →The graph given alogside shows the positions of a body at different times. Calculate the speed of the body as it moves from:
View full solution →
- $A$ to $B.$
- $B$ to $C.$
- $C$ to $D.$
A body starting from rest travels with uniform acceleration. If it travels $100m$ in $5s$, what is the value of acceleration$?$
View full solution →A boy walks from his classroom to the bookshop along a straight corridor towards North. He covers a distance of $20m$ in $25$ seconds to reach the bookshop. After buying a book, he travels the same distance in the same time to reach back in the classroom. Find $(a)$ average speed, and $(b)$ average velocity, of the boy.
View full solution →A train travels the first $15km$ at a uniform speed of $30 km/h;$ the next $75km$ at a uniform speed of 50km/h; and the last 10km at a uniform speed of $20km/h.$ Calculate the average speed for the entire train journey.
View full solution →Define motion. What do you understand by the terms ‘uniform motion’ and ‘non-uniform motion’? Explain with examples.
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