1. A ball is dropped vertically from a height h above the ground .It hits the ground and bounces up vertically to a height h/2.Neglecting subsequent motion and air resistance ,its velocity v varies with the height h as
2. The displacement -time graph of a moving particle is shown below.The instantanous velocity of the particle is negative at the point
a. C
b. D
c. E
d. B
3.The velocity -time graph of a moving particle is shown below.Total displacement of the particle during the time interval when there is nonzero acceleration and retardation is
a. 60m
b. 40m
c. 50m
d. 30m
4. Figure below shows the displacement -time graph of two particles.Mark the correct statement about their relative velocity
a. It first increases and then decreases
b. It is a non zero constant
c. it is zero
d. none of the above
Four position -time graph are shown below.
a.
b.
c.
d.
5 What all graph shows motion with positive velocities
a. a and c only
b. all the four
c. b and D only
d. b only
6. What all graph shows motion with negative velocities
a. a and b only
b. all the four
c. a and c only
d. c only
7.which of the folliwing graph correctly represents velocity-time relationships for a particle released from rest to fall under gravity
a.
b.
c.
d.
8.The v-x graph of a particle moving along a straight line is shown below.Which of the below graph shows a-x graph
a.
b.
c.
d.
9.A truck accelerates from rest at the constant rate a for some time after which it decelerates at a constant rate of b to come to the rest.If the total time elapsed is t ,then find out the maximum velocity attains by the truck
a. (ab/a+b)t
b.(a+b/ab)t
c. (a2+b2/ab)t
d.(a2-b2/ab)t
10.Displacement(y) of the particle is given by
y=2t+t2-2t3
The velocity of the particle when acceleration is zero is given by
a. 5/2
b. 9/4
c. 13/6
d. 17/8
11.Mark out the correct statement
a. Instantaneous Velocity vector is always in the direction of the motion
b. Instantaneous acceleration vector is always in the direction of the motion
c. Acceleration of the moving particle can change its direction without any change in direction of velocity
d. None of the above
Matrix match type 11.In a free fall motion from rest,Match column I to column II
column I
A) Graph between displacement and time
B) Graph between velocity and time
C) Graph between velocity and displacement
D) Graph between KE and displacement
column II
P) Parabola
Q) Straight line
C) Circle
D) No appropiate match given
12. A body fall from height H.if t1 is time taken for covering first half height and
t2 be time taken for second half.Which of these relation is true for t1 and t2
a. t1 > t2
b. t1 < t2
c. t1=t2
d. Depends on the mass of the body
13.A train running at 30m/s is slowed uniformly to a stop in 44 sec.Find the stopping distance?
a. 612 m
b. 662 m
c. 630 m
d. 605 m
14.A nut comes loose from a bolt on the bottom of an elevator as the elavator is moving up the shaft at 3m/s.The nut strikes the bottom of the shaft in 2 sec.How far from the bottom of the shaft was the elevator when nut falls off?
a. 13.6 m
b. 10 m
c. 12.6 m
d. none of these
15. Let v and a denote the velocity and acceleration respectivly of the particle in one dimension motion.
a.the speed of the particle decreases when v.a <0
b. the speed of the particle decreases when v.a >0
c.the speed of the particle increases when v.a=0
d. the speed of the particle decreases when |v|<|a|
16.The displacement of a particle moving in straight line depends on time t as
x=at3+bt2+ct+d
which of the follwing is true
a. Intial acceleration depends on b only
b Intial velocity depends on c only
c. Intial displacement is d
d. Ratio of intial velocity /intial acceleration depends on a and c
17.A particle located at x=0 at time t=0 starts moving along the positive x-direction with a velocity v that varies as
v=√x
The displacement of the particles varies with time as
which of the follwing is true
a. t2
b t3
c. t4
d. t1/2
18.A Train is moving along a straight section of the track with a velocity of 180km/h. The braking deceleration is 2m/s2s
At what distance from a train station should the train driver aply the brake so that train stops at the station
a. 800m
b 625m
c. 700m
d. none of these 19.from the previous question,how long will it take to bring the train to the halt
a. 25s
b 20s
c. 15s
d. none of these Detailed Solutions BACK START
