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Motion Science - Motion

Rajasthan Board (RBSE) - STD 9 - Science (Rajasthan - English Medium). 152 questions in this chapter.

Question types

Motion question types

152 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

152
Questions
6
Question groups
5
Question types
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.

Q 1M.C.Q. [1 M]1 Mark
A student draws a distance$-$time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph?
  • A
    The scooter has uniform speed in this section.
  • B
    The distance travelled by scooter is the maximum in this section.
  • C
    The distance travelled by the scooter is the minimum in this section.
  • ✓
    The distance travelled by the scooter is zero in this section.

Answer: D.

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Q 2M.C.Q. [1 M]1 Mark
A boy is sitting on a merry-go-round which is moving with a constant speed of $10\ ms^{-1}.$ This means that the boy is:
  • A
    At rest.
  • B
    Moving with no acceleration.
  • ✓
    In accelerated motion.
  • D
    Moving with uniform velocity.

Answer: C.

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Q 3M.C.Q. [1 M]1 Mark
A bus increases its speed from $36\ km/h$ to $72\ km/h$ in $10$ seconds. Its acceleration is:
  • A
    $5\ m/s^2$
  • B
    $2\ m/s^2$
  • C
    $6\ m/s^2$
  • ✓
    $1\ m/s^2$

Answer: D.

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Q 4M.C.Q. [1 M]1 Mark
A sprinter is running along the circumference of a big sports stadium with constant speed Which of following do you think is changing in this case?
  • A
    Magnitude of acceleration being produced.
  • B
    Distance covered by the sprinter per second.
  • ✓
    Direction in which the sprinter is running.
  • D
    Entripetal force acting on the sprit.

Answer: C.

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Q 5M.C.Q. [1 M]1 Mark
When a car driver travelling at a speed of $10\ m/s$ applies brakes and brings the car to rest in $20s,$ then retardation will be:
  • A
    $+2m/s^2$
  • B
    $-2m/s^2$
  • C
    $-0.5m/s^2$
  • ✓
    $+0.5m/s^2$

Answer: D.

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Q 10Fill in the blank1 Mark
Fill in the blanks with suitable words:
A motorcycle has a steady $...............$ of $3m/s^2.$ This means that every $...............$ its $...............$ increases by $...............$
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Q 19Que-Ans (Each of 2 Mark )2 Marks
Three speed-time graphs are given below:



Which graph represents the case of:
  1. A cricket ball thrown vertically upwards and returning to the hands of the thrower?
  2. A trolley decelerating to a constant speed and then accelerating uniformly?
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Q 21Que-Ans (Each of 3 Mark )3 Marks
Given alongside is the velocity-tine graph for a moving body:

Find:
  1. Velocity of the body at point C.
  2. Acceleration acting on the body between A and B.
  3. Acceleration acting on the body between B and C.
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Q 22Que-Ans (Each of 3 Mark )3 Marks
The speed-time graph of an ascending passenger lift is given alongside.
What is the acceleration of the lift:
  1. During the first two seconds?
  2. Detween second and tenth second?
  3. During the last two seconds?
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Q 27Que-Ans (Each of 4 Mark )4 Marks
The graph given alongside shows how the speed of a car changes with time:
  1. What is the initial speed of the car?
  2. What is the maximum speed attained by the car?
  3. Which part of the graph shows zero acceleration
  4. Which part of the graph shows varying retardation?
  5. Find the distance travelled in first 8 hours.
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Q 29Que-Ans (Each of 4 Mark )4 Marks
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.
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Q 30Que-Ans (Each of 4 Mark )4 Marks
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.
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