MCQ
Question 1 The displacement in metres of a body varies with time t in second as y = t^2 – t – 2. The displacement is zero for a positive of t equal to
(a) 1 s
(b) 2 s
(c) 3 s
(d) 4 s
Question 2. A boy starts from a point A, travels to a point B at a distance of 3 km from A and returns to A. If he takes two hours to do so, his speed is
(a) 3 km/h
(b) zero
(c) 2 km/h
(d) 1.5 km/h
Question 3. A 180 metre long train is moving due north at a speed of 25 m/s. A small bird is flying due south, a little above the train, with a speed of 5 m/s. The time taken by the bird to cross the train is
(a) 10 s
(b) 12 s
(c) 9 s
(d) 6 s
Question 4. A body starts from rest and travels with uniform acceleration on a straight line. If its velocity after making a displacement of 32 m is 8 m/s, its acceleration is
(a) 1 m/s²
(b) 2 m/s²
(c) 3 m/s²
(d) 4 m/s²
Question 5. Which one of the following is the unit of velocity?
(a) kilogram
(b) metre
(c) m/s
(d) second
Question 6. A body starts from rest and travels for t second with uniform acceleration of 2 m/s². If the displacement made by it is 16 m, the time of travel t is
(a) 4 s
(b) 3 s
(c) 6 s
(d) 8 s
Question 7. Odometer measures – (a) Speed (b) Distance (c) Time (d) Average speed
Question 8. An athlete finishes a round of circular track of radius R in 40 sec. What is his displacement at the end of 2 min 20 sec?
(a) 2R
(b) 2πR
(c) 7πR
(d) Zero
ANWERS
- B
- A
- D
- A
- C
- A
- B
- A