Match the following: Column A Column B (i) 1 kg wt . (a) 1 N (ii) 10 5 dyne (b) 1000 kg (iii) 1 metric ton (c) 100 kg (iv) 1 quintal (d) 9 . 8 N (v) 1 N - s (e) kg ms - 1

(i) 1 kg wt - (d) 9 . 8 N One kilogram weight is the force exerted on a one kilogram mass when acted 9 . 8 m s - 2 acceleration on it. (ii) 10 5 dyne - (a) 1 N Dyne is the CGS unit of force and it is related to SI unit newton as 10 5 dyn e = 1 N . (iii) 1 metric ton - (b) 1000 kg Metric ton is a non-S.I. metric unit of mass equal to 1000 kg (iv) 1 quintal - (c) 100 kg The quintal is a historical unit of mass in many countries which is usually defined as 100 base units. (v) 1 N - s - (e) kg m s - 1 Using the expansion of unit newton we can say that, N - s = kg m s - 2 × s = kg m s - 1

Match the following for multiple answers (i) Galileo's law of inertia (a) Newton's second law (ii) Rate of change of momentum (b) Newton's first law (iii) Action-reaction pair (c) Newton's third law (iv) Definition of force (v) F = ma

(i) Galileo's law of inertia - (a) Newton's first law Newton's first law of motion is also called Galileo's law of inertia. (ii) Rate of change of momentum - (b) Newton's second law According to Newton's second law of motion, the rate of change of momentum of a body is directly proportional to the net external force acting on the body and takes place in the direction of force. (iii) Action-reaction pair - (c) Newton's third law According to Newton's third law, for every action there is an equal and opposite reaction. (iv) Definition of force - (a) Newton's first law Newton's first law of motion leads to the definition of force. A push or pull which changes or tends to change the state of rest or uniform motion of a body is called force. (v) F = m a - (b) Newton's second law Newton's second law can be formulated as, F = m a , where a is the acceleration.

E M B I B E

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment

Sunil Batra Solutions for Chapter: Force and Laws of Motion, Exercise 5: Summative Assessment

Author:Sunil Batra

Sunil Batra Physics Solutions for Exercise - Sunil Batra Solutions for Chapter: Force and Laws of Motion, Exercise 5: Summative Assessment

Attempt the free practice questions on Chapter 2: Force and Laws of Motion, Exercise 5: Summative Assessment with hints and solutions to strengthen your understanding. Modern's abc+ Of Science - Physics For Class IX solutions are prepared by Experienced Embibe Experts.

Questions from Sunil Batra Solutions for Chapter: Force and Laws of Motion, Exercise 5: Summative Assessment with Hints & Solutions

EASY

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 12

The SI unit of linear momentum is $X m s^{- 1}$ . What is $X$ ?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 15

State the action and reaction in the following:

Firing of a bullet from a gun

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 15

State the action and reaction in the following:

A person walking on the floor.

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 2

Give two examples of each:

Inertia of motion

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 2

Give two examples of each:

Inertia of direction

EASY

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 4

Match the following:

	Column A		Column B
(i)	$1 kg wt .$	(a)	$1 N$
(ii)	$10^{5} dyne$	(b)	$1000 kg$
(iii)	$1$ metric ton	(c)	$100 kg$
(iv)	$1$ quintal	(d)	$9.8 N$
(v)	$1 N - s$	(e)	$kg {ms}^{- 1}$

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 5

Match the following for multiple answers

(i)	Galileo's law of inertia	(a)	Newton's second law
(ii)	Rate of change of momentum	(b)	Newton's first law
(iii)	Action-reaction pair	(c)	Newton's third law
(iv)	Definition of force
(v)	$F = ma$

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment>Q 11

A $2$ metric ton body $[1 metric ton = 1000 kg]$ is moving with a velocity of $54 km h^{- 1}$ . Find the change in momentum of the body when it stops. If it stops in $15$ seconds, calculate the retarding force.

Learn and Prepare for any exam you want !

|

|

|

|

|

|

|

|