Assertion : The speedometer of an automobile measure the average speed of the automobile.
Reason : Average velocity is equal to total displacement per total time taken.
Reason : Average velocity is equal to total displacement per total time taken.
Question types
Motion in One Dimension question types
282 questions across 2 question groups — pick any mix to generate a JEE physics paper with step-by-step answer keys.
282
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Question types
Sample Questions
Motion in One Dimension questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
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Assertion : The average and instantaneous velocities have same value in a uniform motion.
Reason : In uniform motion, the velocity of an object increases uniformly.
Reason : In uniform motion, the velocity of an object increases uniformly.
Assertion : The average speed of an object may be equal to arithmetic mean of individual speed.
Reason : Average speed is equal to total distance travelled per total time taken.
Reason : Average speed is equal to total distance travelled per total time taken.
Assertion : The position-time graph of a body moving uniformly is a straight line parallel to position-axis.
Reason : The slope of position-time graph in a uniform motion gives the velocity of an object.
Reason : The slope of position-time graph in a uniform motion gives the velocity of an object.
Assertion : Displacement of a body is vector sum of the area under velocity-time graph.
Reason : Displacement is a vector quantity.
Reason : Displacement is a vector quantity.
A body is thrown vertically upwards with velocity $u$. The distance travelled by it in the fifth and the sixth seconds are equal. The velocity $u$ is given by $(g=9.8 m / s )$
- A$24.5 m / s$
- ✓$49.0 m / s$
- C$73.5 m / s$
- D$98.0 m / s$
Answer: B.
View full solution →A particle when thrown, moves such that it passes from same height at 2 and $10 s$, the height is
- A$g$
- B$2 g$
- C$5 g$
- ✓$10 g$
Answer: D.
View full solution →If a train travelling at $72 kmph$ is to be brought to rest in a distance of 200 metres, then its retardation should be
- A$20 ms ^{-2}$
- B$10 ms ^{-2}$
- C$2 ms ^{-2}$
- ✓$1 ms ^{-2}$
Answer: D.
View full solution →An object is moving with a uniform acceleration which is parallel to its instantaneous direction of motion. The displacement $(s)$ - velocity $(v)$ graph of this object is
- A
- B
- ✓
- D
Answer: C.
View full solution →The displacement of a particle starting from rest (at $t=0$ ) is given by $s=6 t^2-t^3$. The time in seconds at which the particle will attain zero velocity again, is
- A2
- ✓4
- C6
- D8
Answer: B.
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