Question

plz give me the answer ​

Answer 1

Answer:

this is actually not a question.

it is an example

nevertheless I will explain it to you

Explanation:

the graph shows the velocity of the moving ball with time

e.g. at time 10sec the velocity is 0m/s.

this graph tells us that the body is decelarating since the velocity is decreasing with time.

Answer 2

Answer:

QUESTION:- FIND FORCE ???

let's, according to the question

intial velocity(U) = 20cm/s.

final Velocity(V) =0 ( because finally body is in rest position due to friction).

TOtal time taken= 10 sec.

so, apply first equation for kinematics:-

v= u+at

0= 20 + a×10.

so, a= 2 cm/sec = 0.02 m/sec^2

than, finally find

force= mass× acceleration (a)

.. = 20 /1000 × 20/100

= 0.004 N (ans)

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