JEE (Main) Physics - Kinematics Multiple Choice Questions (MCQs)
JEE (Main) Physics - Kinematics Multiple Choice Questions (MCQs)
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Which of the following is a correct description of speed?
- A. Speed is a vector quantity.
- B. Speed is a scalar quantity.
- C. Speed and velocity are the same.
- D. Speed has both magnitude and direction.
Answer: B. Speed is a scalar quantity.
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An object is moving in a straight line with constant velocity. The acceleration of the object is:
- A. Zero
- B. Constant
- C. Varying
- D. Not defined
Answer: A. Zero
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Which of the following statements about the frame of reference is true?
- A. A frame of reference is a stationary point from which motion is observed.
- B. A frame of reference can only be moving.
- C. The frame of reference is always the Earth.
- D. All frames of reference are absolute.
Answer: A. A frame of reference is a stationary point from which motion is observed.
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If a body moves with uniform velocity in a straight line, its speed and velocity are:
- A. Equal in magnitude and opposite in direction
- B. Equal in magnitude and direction
- C. Not related
- D. Different in magnitude
Answer: B. Equal in magnitude and direction
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An object moves with an initial velocity of 5 m/s and a constant acceleration of 2 m/s². What is its velocity after 3 seconds?
- A. 11 m/s
- B. 16 m/s
- C. 17 m/s
- D. 9 m/s
Answer: A. 11 m/s
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A car is moving along a straight road with a speed of 30 m/s. What is the distance traveled by the car in 10 seconds?
- A. 300 meters
- B. 3000 meters
- C. 600 meters
- D. 6000 meters
Answer: A. 300 meters
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The motion of a car along a straight line is described by the equation \( x = 5t^2 + 2t \). What is the velocity of the car at \( t = 3 \) seconds?
- A. 32 m/s
- B. 40 m/s
- C. 34 m/s
- D. 30 m/s
Answer: C. 34 m/s
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What is the relationship between displacement and distance for an object moving in a straight line?
- A. Displacement is always equal to distance.
- B. Displacement is less than distance.
- C. Displacement is greater than distance.
- D. Displacement and distance are unrelated.
Answer: B. Displacement is less than distance.
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A body starts from rest and moves with a uniform acceleration of 5 m/s². What will be its speed after 4 seconds?
- A. 20 m/s
- B. 15 m/s
- C. 10 m/s
- D. 25 m/s
Answer: A. 20 m/s
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The velocity of an object moving along a straight line is represented by the equation \( v = 5t + 3 \). What is the acceleration of the object?
- A. 5 m/s²
- B. 3 m/s²
- C. 0 m/s²
- D. 2 m/s²
Answer: A. 5 m/s²
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If an object moves with a constant velocity in a straight line, then its displacement-time graph is:
- A. A straight line with a slope equal to the velocity
- B. A straight line with a slope equal to zero
- C. A curve with a steep slope
- D. A curve with a zero slope
Answer: A. A straight line with a slope equal to the velocity
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Which of the following quantities is a vector?
- A. Speed
- B. Distance
- C. Displacement
- D. Time
Answer: C. Displacement
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An object covers a distance of 100 meters in 10 seconds. What is its average speed?
- A. 10 m/s
- B. 5 m/s
- C. 20 m/s
- D. 100 m/s
Answer: B. 5 m/s
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Which of the following is true about uniform motion?
- A. The object moves at varying speed.
- B. The object covers equal distances in equal intervals of time.
- C. The object accelerates constantly.
- D. The object moves in a curved path.
Answer: B. The object covers equal distances in equal intervals of time.
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A particle travels 20 meters in 4 seconds and 30 meters in the next 5 seconds. What is the average velocity of the particle?
- A. 5 m/s
- B. 10 m/s
- C. 4.5 m/s
- D. 6 m/s
Answer: C. 4.5 m/s
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