A body ' A ' travel with velocity u → due east and another body B moves with velocity v → due west. What is the relative velocity of B w.r. to A ?

When two bodies moves opposite to each other, its relative velocity will be the summation of the two velocities. Therefore, relative velocity of B w.r.t. A = u → + v → .

Derive the relation s = u t + 1 2 a t 2 , where the symbols have their usual meanings.

Using the formulae of acceleration We know that, a = d v / d t ∫ v u d v = ∫ a 0 d t ⇒ v - u = a t ⇒ v = u + a t . . . . . . ( 1 ) a = v d v / d s ∫ u v v d v = ∫ o s a d s ⇒ v 2 - u 2 = 2 a s . . . . . ( 2 ) P u t t i n g v = u + a t i n e q u a t i o n v 2 - u 2 = 2 a s u + a t 2 - u 2 = 2 a s W e g e t s = u t + a t 2 2 .

E M B I B E

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 4

MEDIUM

11th Odisha Board

IMPORTANT

Earn 100

Draw the displacement - time graph of a body which starting from rest moves with uniform velocity for two seconds and then remains at rest for $3$ seconds.

Important Questions on Kinematics

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 6

Distinguish between speed and velocity giving one example for each.

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 7

A body

' A'

travel with velocity

\vec{u}

due east and another body

B

moves with velocity

\vec{v}

due west. What is the relative velocity of

B

w.r. to

A

?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 11

A body travels

100 m

in first two seconds and

104 m

in the next

4

second. How far in meters will it move in the next

1.25

second if the acceleration is uniform.

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 12

A stone is dropped from a rising balloon at a height of

76 m

above the ground and reaches the ground in

6 s

. What was the velocity of the balloon, when the stone was dropped.

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 1

Using calculus method derive the expression for the displacement in the nth second of a body moving with uniform acceleration along a straight line.

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 2

Derive the relation

s = u t + \frac{1}{2} a t^{2}

, where the symbols have their usual meanings.

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 3

Obtain velocity-time and position-time relation for the uniform and uniformly accelerated motion. Explain the results with the help of position - time and velocity - time graph for both cases.

HARD

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 3 - Kinematics>MODEL QUESTIONS>Q 7

Discuss about speed - time graph and velocity-time graph. Give the distinctive features.