Motion in one dimension
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Q1. The equation v = u + at gives information as
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(a) velocity is a function of time.
(b) velocity is a function of position.
(c) Position is a function of time.
(d) Position is function of velocity and time
Q2. Which of the following can determine the acceleration of a moving object?
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(a) area of velocitytime graph
(b) slope of velocitytime graph
(c) area of distancetime graph
(d) slope of the distance timegraph
Q3. A body is projected up with an initial velocity u m/s. It goes up to a height h metres in t seconds time. Then it comes back at the point of projection. Considering negligible air resistance, which of the following statement is true?
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(a) the acceleration is zero
(b) the displacement is zero
(c) the average velocity is 2h/t
(d) the final velocity is 2u when body reaches projection point
Q4. A car accelerates at 1.5 m/s^2 in a straight road. How much is the increase in velocity in 4s?
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a) 6 m/s
(b) 4 m/s
(c) 3 m/s
(d) 2.66 m/s
Q5. When an object undergoes acceleration
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(a) there is always an increase in its velocity
(b) there is always an increase in its speed
(c) a force always acting on it
(d) all of the above.
Q6. : The numerical ratio of displacement to distance for a moving object is
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(a) always less than 1
(b) always equal to 1
(c) always greater than 1
(d) equal to or less than 1
Q7. A train moving with a uniform speed of 54 km/h. What is its speed in m/s?
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(a) 15 m/s
(b) 1.5 m/s
(c) 9 m/s
(d) 90 m/s
Q8. Name the unit that represents the area under the velocitytime graph.
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Speed
Velocity
Distance travelled
Acceleration
Q9. A car starts from city A and it travels 50 km in a straight line to city B. Immediately it turns around, and returns to city A. It took 2 hours for this round trip. The average speed of the car for this round trip is:
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(a) 0 km/h
(b) 25 km/h
(c) 50 km/h
(d) 100 km/h
Q10. What is the acceleration of a body moving with uniform velocity?
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Zero
1 m/s^2
2 m/s^2
Retardation
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