Motion In Straight Line
1.The acceleration of a particle come in to picture if
a) Direction of velocity changes b)Speed changes
c)Both d)None
2. A body is thrown with speed 20m/s vertically upward , It will return to thrower’s
hand after a time of:(assume g=10m/s2)
a) 10 s b) 2s
c) 4s d) 5s
3. it is possible for a particle to have zero velocity and non zero acceleration
a) true b) false
4. Area under the v-t graph of straight line motion is
a) Change in velocity b) Instantaneous acceleration
c) Change in position d) None
5. Slope of a tangent drawn onto v-t graph of straight line motion is
a) Instantaneous velocity b) average acceleration
c) Instantaneous acceleration d) speed
6. The slope of position -time graph form motion is
a) displacement b) average velocity
c)acceleration d)None
7. The slope of velocity vs time graph for motion with uniform velocity is
a) Zero b)Infinite
c)one d)None
8. The numerical ratio of displacement to distance is
a) always equal to 1 b) always greater than 1
c) equal to or less than one d)always less than 1
9. A body starts from rest and travels with uniform acceleration a to make a
displacement of 6 m. If its velocity after making the displacement is 6 m/s, then its
uniform acceleration a is
a) 1 m/s² b) 4 m/s²
c) 3 m/s² d)2 m/s²
10. A boy moves on a circular distance of radius R. Starting from a point A he
moves to a point B which is on the other end of the diameter AB. The ratio of the
distance traveled to the displacement made by him is
a)π/2 b) π/4
c) 2π d) 4π
11. 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)1s b)2s
c)3s d)4s
12. 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 average speed and average
velocity respectively ?
a) 0, 3 km/h b) 3km/h , 3 km/h
c) 3km/h , 0 km/h d) 2km/h , 0 km/h
13. The displacement in meters of a body varies with time t in second as
y = t2 – t – 2. The displacement is zero for a positive of t equal to ?
a) 4s b) 2s
c) 3s d) 1s
14. Which of the following remains constant if a body travels with constant
acceleration?
a) velocity b) displacement
c) time d) None
15. A man leaves home for a cycle ride and comes back home after an half-an-hour
ride covering a distance of 10 km. What is the average velocity of the ride?
a) 10 km/h b) 15 km/h
c) 0 km/h d) 20 km/h
16. 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) 2πR b) 4πR
c) 3πR d) 2R
17. The velocity of a body moving with a uniform acceleration of 2 m/sec2 is 10
m/sec. Its velocity after an interval of 4 sec is
a) 16 m/s b) 12 m/s
c) 14 m/s d) 18 m/s
18. A motor car moving with a uniform speed of 20 m/sec comes to stop on the
application of brakes after travelling a distance of 10 m Its acceleration is
a) -20 m/sec2 b) -40 m/sec2
c) -10 m/sec2 d) -30 m/sec2
19. Which is a constant for a freely falling object?
a) Displacement b)Velocity
c) acceleration d) Speed
20. 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) 2 km/h b) 3 km/h
c) 4 km/h d) 0 km/h
21. 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) 3 s b) 4s
c) 5s d) 6s
22. 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
23. The dimensional formula for acceleration is _____________
24. convert 18 km/h into m/s _________________
25. The dimensional formula for speed is ______________
26. Which one of the following is the unit of velocity ?
a) km/h b) m/s
c) both d) None
27. The numerical ratio of average speed to average velocity is
a) Greater than or equal to 1 b) Less than or equal to 1
c)equal to 1 d) Zero
28.The area under the v-t curve is __________________
29. The area under the a-t curve is _________________
30. a)Define average velocity and average acceleration.
b)A man is running on circular track which has radius 7m. If he completes half
revolution what are the distance travelled and displacement?
31. Derive equations of motion for constant acceleration
32. The volume of a cube of side 2 cm is equal to ______________m3
33. a) Distinguish between i) average velocity and Instantaneous velocity
34.A man walks to the market which is at a distance of 6 km with a speed of 2.5
kmph and walks back with a speed of 4 kmph. Find his average speed for the round
trip.
35. Define average velocity and average acceleration
36. The position of the object moving along X-axis is given by x=a + bt2,where
a=8.5 m,b=2.5 ms-2 and t is measured in seconds.
i) What is the average velocity between t=2 sec and t=4 sec
ii) What is the average acceleration between t=2 s and t=4 s.
37. The position of the object moving along X-axis is given by x=a + bt2,where
a=6 m,b=2 ms-2 and t is measured in seconds.
i) what is the instantaneous velocity at t=2s
ii) What is the instantaneous acceleration at t=2s
38. A food packet is dropped from an aero plane, moving with a speed of 360
kmph in horizontal direction from a height of 500 m. Find the time that the food
packet hits the ground
39.The acceleration of a vertically projected body at the maximum height is
(a)Zero (b) >g (c) g (d) <g
40. The displacement of a body in t seconds is given by
in meter. Its acceleration is
2 2
(a) 0.25 m/s (b) 0.5 m/s
2 2
(c) 0.75 m/s (d) 1 m/s
All the best
With Regards
Krishnam Raju V
Faculty in Physics
RGUKT,Basar.
