Questions :
1.Find the average speed of a bicycle if it completes two round of a circular track of radius 140m twice in 5min 52 sec.
(a) 10m/s
(b) 5m/s
(c) 2m/s
(d) 4m/s
2. If ‘s’ is displacement and ‘d’ is distance between two points, then the correct relation is
(a) s = d
(b) s > d
(c) d > s
(d) none
3. Which of the following figures represents uniform motion of a moving object correctly?
4. A physical quantity which cannot be negative is
(a) displacement
(b) velocity
(c) acceleration
(d) distance
5. A person moves from point O in a straight line to a point X 50m, and return from X to point Y in direction XO 20m. What is displacement made?20. A person moves from point O in a straight line to a point X 50m, and return from X to point Y in direction XO 20m. What is displacement made?
(a) 50m
(b) 80m
(c) 20m
(d) 30m
6. When a body covers unequal distances in equal intervals of time, it is said to be in
(a) linear motion
(b) uniform motion
(c) non-uniform motion
(d) vibratory motion
7. A particle travels with a speed of 18 km/hr, its speed in m/s is
(a) 5 m/s
(b) 50 m/s
(c) 64.8 m/s
(d) 6.48 m/s
8. Which of the following is vector quantity?Which of the following is vector quantity?
(a) Distance
b) Displacement
(c) Velocity
(d) Both (b) and (c)
9. A bus moves from stop ‘A to stop ‘B’ with a speed of 40 km/hr and then from stop ‘B’ to stop ‘A with a speed of 50 km/hr. Its average speed is
(a) 48.5 km/hr
(b) 44 km/hr
(c) 45 km/hr
(d) 44.4 km/hr
10. Area under velocity-time gives
(a) displacement
(b) acceleration
(c) velocity
(d) time
11. Displacement-time graph of a uniformly accelerated motion is
(a) parabola
(b) straight line
(c) an inclined line
(d) none
12. A car with speed 72km/hr suddenly applies break. The break has maximum ability to decelerate with 5ms^(-2). Find time taken to stop the car after applying breaks?A car with speed 72km/hr suddenly applies break. The break has maximum ability to decelerate with 5ms^(-2). Find time taken to stop the car after applying breaks?
(a) 2sec
(b) 3sec
(c) 4sec
(d) 5sec
13. 28. A particle travels 100 metres after starting from rest in 10 seconds. Its acceleration is
(a) 2 m/s2
(b) 4 m/s2
(c) 1 m/s2
(d) 20 m/s2
14. In uniform circular motion, velocity of particle is
(a) constant
(b) variable in magnitude
(c) variable in direction
(d) both (a) and (b)
15. 30. Velocity of a particle increases from 10 m/s to 15 m/s after travelling a distance of 5 metre. Its acceleration is
(a) 12.5 m/s2
(b) 125 m/s2
(c) 1.25 m/s2
(d) 0.125 m/s2
[WpProQuiz 67]