Read and download free pdf of CBSE Class 9 Science Force and Laws of Motion Worksheet Set B. Download printable Science Class 9 Worksheets in pdf format, CBSE Class 9 Science Chapter 9 Force and Laws of Motion Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 9 Assignments and practice them daily to get better marks in tests and exams for Class 9. Free chapter wise worksheets with answers have been designed by Class 9 teachers as per latest examination pattern
Chapter 9 Force and Laws of Motion Science Worksheet for Class 9
Class 9 Science students should refer to the following printable worksheet in Pdf in Class 9. This test paper with questions and solutions for Class 9 Science will be very useful for tests and exams and help you to score better marks
Class 9 Science Chapter 9 Force and Laws of Motion Worksheet Pdf
Short Answer
Question. An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.
Answer : Yes,an object can have zero displacement even when it has moved through a distance.This happens when final position of the object coincides with its initial position. For example,if a person moves around park and stands on place from where he started then here displacement will be zero.
Question. Which of the following is true for displacement?
(a) It cannot be zero.
(b) Its magnitude is greater than the distance travelled by the object.
Answer : None of the statement is true for displacement First statement is false because displacement can be zero. Second statement is also false because displacement is less than or equal to the distance travelled by the object.
Question. Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?
Answer : The magnitude of average velocity of an object is equal to its average speed, only when an object is moving in a straight line.
Question. What does the path of an object look like when it is in uniform motion?
Answer : An object having uniform motion has a straight line path.
Question. When will you say a body is in (i) uniform acceleration? (ii) nonuniform acceleration?
Answer :
(i) A body is said to be in uniform acceleration if it travels in a straight line and its velocity increases or decreases by equal amounts in equal intervals of time.
(ii) A body is said to be in nonuniform acceleration if the rate of change of its velocity is not constant.
Question. A train starting from a railway station and moving with uniform acceleration attains a speed 40 km h−1 in 10 minutes. Find its acceleration.
Answer :
Question. What is the nature of the distance - 'time graphs for uniform and nonuniform motion of an object?
Answer : When the motion is uniform,the distance time graph is a straight line with a slope.
When the motion is non uniform, the distance time graph is not a straight line.It can be any curve.
Question. What can you say about the motion of an object if its speed - 'time graph is a straight line parallel to the time axis?
Answer : If speed time graph is a straight line parallel to the time axis, the object is moving uniformly.
Question. A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s−2, with what velocity will it strike the ground? After what time will it strike the ground?
Answer : Let us assume, the final velocity with which ball will strike the ground be 'v' and time it takes to strike the ground be 't'
Initial Velocity of ball, u =0
Distance or height of fall, s =20 m
Downward acceleration, a =10 m s-2
As we know, 2as =v2-u2
v2 = 2as+ u2
= 2 x 10 x 20 + 0
= 400
∴ Final velocity of ball, v = 20 ms-1
t = (v-u)/a
∴Time taken by the ball to strike = (20-0)/10
= 20/10
= 2 seconds
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CBSE Class 9 Science Chapter 9 Force and Laws of Motion Worksheet
The above practice worksheet for Chapter 9 Force and Laws of Motion has been designed as per the current syllabus for Class 9 Science released by CBSE. Students studying in Class 9 can easily download in Pdf format and practice the questions and answers given in the above practice worksheet for Class 9 Science on a daily basis. All the latest practice worksheets with solutions have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their examinations. Studiestoday is the best portal for Printable Worksheets for Class 9 Science students to get all the latest study material free of cost.
Worksheet for Science CBSE Class 9 Chapter 9 Force and Laws of Motion
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Chapter 9 Force and Laws of Motion worksheet Science CBSE Class 9
All practice paper sheet given above for Class 9 Science have been made as per the latest syllabus and books issued for the current academic year. The students of Class 9 can be assured that the answers have been also provided by our teachers for all test paper of Science so that you are able to solve the problems and then compare your answers with the solutions provided by us. We have also provided a lot of MCQ questions for Class 9 Science in the worksheet so that you can solve questions relating to all topics given in each chapter. All study material for Class 9 Science students have been given on studiestoday.
Chapter 9 Force and Laws of Motion CBSE Class 9 Science Worksheet
Regular printable worksheet practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Chapter 9 Force and Laws of Motion concepts. Practice worksheets play an important role in developing an understanding of Chapter 9 Force and Laws of Motion in CBSE Class 9. Students can download and save or print all the printable worksheets, assignments, and practice sheets of the above chapter in Class 9 Science in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 9 Science MCQ Test for the same chapter.
Worksheet for CBSE Science Class 9 Chapter 9 Force and Laws of Motion
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