This study material is an ANSWER KEY, however, can be used as NOTES that includes answers of different aspects of topic called DYNAMICS. NOTES are utilized for NINTH standard (BY FRESH MAN'S year student). This study material is comprised on 21 pages in PDF format. NOTES include following: -MCQS [1...
, MULTIPLE CHOICE QUESTIONS
1. Newton’s First Law of Motion is also known as law of
a. Speed b. rest
c. Inertia d. Force
2. Quantity of matter contained in a body is called
a. mass b. volume
c. area d. weight
3. Quantity of motion contained in a body is called
a. force b. Inertia
c. momentum d. gravity
4. Law of conservation of momentum defines that the total momentum of a system of two bodies
before and after collision_________ .
a. remains constant b. retains more momentum
c. loses some momentum d. none of the above is true
5. Weight of a body can be measured using a spring balance; it differs from place to place because of
variation in_________.
a. acceleration b. gravitational pull
c. velocity d. size of spring of balance
6. It is easier to push an empty shopping cart than a full on, because the filled cart has more mass than
the empty one. This can be expressed by
a. F m b. F m
c. F 1/m d. F m
7. Centrifugal force is always directed
a. towards centre b. away from center
c. along the circular path d. all sides
, 8. Friction opposes motion between two bodies in contact because of
a. charges on bodies b. weight of bodies
c. roughness of surfaces d. none of above
9. Which statement is true for limiting frictional force
a. It is greater than rolling friction b. it is greater than sliding friction
c. it is greater than kinetic friction d. all are true
10. A man pulls a crate of mass 25kg across leveled ground with a horizontal force of 60N. A constant
force of friction of 20N acts on the sledge. What is the acceleration of the sledge?
a. 0.63m/s2 b.1.6m/s2
c.2.4m/s2 d.3.2m/s2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller afshanzubair. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
