DELHI PUBLIC SCHOOL ONGC, NAZIRA
CLASS: IX A/B/C Date:
Name: Roll No.:
Subject: Science Assignment No.: 2, 2023-24 Max. Marks:
PHYSICS
Q1. Choose the correct option from the following:
(i). The displacement of the body in 5seconds from the beginning of the motion is
(a) 12.5m (b) 100m (c) 87.5m (d) 50m
(ii). Which of the following is true?
(a) Speed is always positive and velocity can be positive, negative or zero
(b) Speed and velocity are always positive
(c) Speed and velocity can be positive, negative or zero
(b) Speed can be positive, negative or zero and velocity is always positive
(iii) The slope of velocity-time graph gives
(a) the distance (b) the displacement
(c) the acceleration (d) the speed
Q2. For the given questions (i), (ii) and (iii) , two statements are given- one labeled Assertion (A) and the
other labeled Reason (R).
Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below:
(a) Both A and R are true, and R is correct explanation of the assertion.
(b) Both A and R are true, but R is not the correct explanation of the assertion.
(c) A is true, but R is false.
(d) A is false, but R is true.
(i). Assertion: Motion of moon around Earth is a non-uniform motion.
Reason : The size of moon is smaller than that of Earth.
(ii) Assertion: The distance and displacement are different physical quantities.
Reason : Distance is the length of actual path while displacement is directed distance between initial and final
positions.
(iii) Assertion : The motion of the athlete moving along a circular path is an example of an accelerated motion.
Reason : If a boy moves with a velocity of constant magnitude along a circular path, the only change in his
velocity is due to the change in the direction of motion.
Q3. Read the following paragraph and answer the questions:
Two Express trains A and B start from two stations 250km apart from each other with an initial velocity of
72km/h and 90km/h respectively. After 1hrs, due to some inconvenience, both the trains start running on the
same track towards each other. A farmer passing by, watches both the trains coming towards each other and
stands on the track and raises his red shirt. Both trains decelerate uniformly by 0.5m/s 2 and finally stop and the
mishap is averted.
(a)Define displacement and write its CGS unit.
(b)Give one example of a situation in which a body covers a certain distance but its displacement is zero.
(c) What is the distance between the trains after 1hrs?
CLASS: IX A/B/C Date:
Name: Roll No.:
Subject: Science Assignment No.: 2, 2023-24 Max. Marks:
PHYSICS
Q1. Choose the correct option from the following:
(i). The displacement of the body in 5seconds from the beginning of the motion is
(a) 12.5m (b) 100m (c) 87.5m (d) 50m
(ii). Which of the following is true?
(a) Speed is always positive and velocity can be positive, negative or zero
(b) Speed and velocity are always positive
(c) Speed and velocity can be positive, negative or zero
(b) Speed can be positive, negative or zero and velocity is always positive
(iii) The slope of velocity-time graph gives
(a) the distance (b) the displacement
(c) the acceleration (d) the speed
Q2. For the given questions (i), (ii) and (iii) , two statements are given- one labeled Assertion (A) and the
other labeled Reason (R).
Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below:
(a) Both A and R are true, and R is correct explanation of the assertion.
(b) Both A and R are true, but R is not the correct explanation of the assertion.
(c) A is true, but R is false.
(d) A is false, but R is true.
(i). Assertion: Motion of moon around Earth is a non-uniform motion.
Reason : The size of moon is smaller than that of Earth.
(ii) Assertion: The distance and displacement are different physical quantities.
Reason : Distance is the length of actual path while displacement is directed distance between initial and final
positions.
(iii) Assertion : The motion of the athlete moving along a circular path is an example of an accelerated motion.
Reason : If a boy moves with a velocity of constant magnitude along a circular path, the only change in his
velocity is due to the change in the direction of motion.
Q3. Read the following paragraph and answer the questions:
Two Express trains A and B start from two stations 250km apart from each other with an initial velocity of
72km/h and 90km/h respectively. After 1hrs, due to some inconvenience, both the trains start running on the
same track towards each other. A farmer passing by, watches both the trains coming towards each other and
stands on the track and raises his red shirt. Both trains decelerate uniformly by 0.5m/s 2 and finally stop and the
mishap is averted.
(a)Define displacement and write its CGS unit.
(b)Give one example of a situation in which a body covers a certain distance but its displacement is zero.
(c) What is the distance between the trains after 1hrs?
