EASY

11th Mizoram Board

IMPORTANT

Earn 100

Suggest a suitable physical situation for each of the following graphs figure:
a

b

c

Important Questions on Motion in a Straight Line

MEDIUM

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.2

Figure given shows the

x - t

plot of a particle executing one-dimensional simple harmonic motion. Give the signs of position, velocity and acceleration variables of the particle at

t = 0.3 s, 1.2 s, - 1.2 s

EASY

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.21

Figure given shows the

x - t

plot of a particle in one-dimensional motion. Three different equal intervals of time are shown. In which interval is the average speed greatest, and in which is it the least? Give the sign of average velocity for each interval.
Question Image

MEDIUM

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.22

Figure gives a speed-time graph of a particle in motion along a constant direction. Three equal intervals of time are shown. In which interval is the average acceleration greatest in magnitude? In which interval is the average speed greatest? Choosing the positive direction as the constant direction of motion, give the signs of

v

and

a

in the three intervals. What are the accelerations at the points

A, B, C

and

D

MEDIUM

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.23

A three-wheeler starts from rest, accelerates uniformly with

1 m s^{- 2}

on a straight road for

10 s

, and then moves with uniform velocity. Plot the distance covered by the vehicle during the

n

th second

(n = 1,2, 3 \dots .)

versus

n

. What do you expect this plot to be during accelerated motion: a straight line or a parabola?

MEDIUM

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.24

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to

49 m / s

. How much time does the ball take to return to his hands? If the lift starts moving up with a uniform speed of

5 m / s

and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands?

EASY

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.25

On a long horizontally moving belt (Figure), a child runs to and fro with a speed $9 k m h^{- 1}$ (with respect to the belt) between his father and mother located $50 m$ apart on the moving belt. The belt moves with a speed of $4 k m h^{- 1}$ . For an observer on a stationary platform outside, what is the
(a) speed of the child running in the direction of motion of the belt ?
(b) speed of the child running opposite to the direction of motion of the belt ?
(c) time taken by the child in (a)and (b)?
Which of the answers alter if motion is viewed by one of the parents?
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HARD

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.26

Two stones are thrown up simultaneously from the edge of a cliff

200 m

high with initial speeds of

15 m s^{- 1}

and

30 m s^{- 1}

. Verify that the graph shown in Figure correctly represents the time variation of the relative position of the second stone with respect to the first. Neglect air resistance and assume that the stones do not rebound after hitting the ground. Take

g = 10 m s^{- 2}

. Give the equations for the linear and curved parts of the plot.
Question Image

EASY

11th Mizoram Board

IMPORTANT

PHYSICS PART 1 TEXTBOOK FOR CLASS XI>Chapter 3 - Motion in a Straight Line>EXERCISES>Q 3.27

The speed-time graph of a particle moving along a fixed direction is shown in Figure. Obtain the distance traversed by the particle between

(a) $t = 0 s$ to $10 s,$

(b) $t = 2 s$ to $6 s$

Question Image
What is the average speed of the particle over the intervals in (a) and (b)?

Suggest a suitable physical situation for each of the following graphs figure: a b c

Important Questions on Motion in a Straight Line

Learn and Prepare for any exam you want !

Suggest a suitable physical situation for each of the following graphs figure:
a

b

c