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DLS
 3 years ago
A body of mass 2 kg, moving on a horizontal surface
with an initial velocity of 4 m/s, comes to rest after 2
seconds. If one wants to keep this body moving on
the same surface with a velocity of 4 m/s, the force
required is
DLS
 3 years ago
A body of mass 2 kg, moving on a horizontal surface with an initial velocity of 4 m/s, comes to rest after 2 seconds. If one wants to keep this body moving on the same surface with a velocity of 4 m/s, the force required is

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mayankdevnani
 3 years ago
Best ResponseYou've already chosen the best response.2first, find acceleration of body is what is the formula of acceleration of a body???

mayankdevnani
 3 years ago
Best ResponseYou've already chosen the best response.2\[a=\frac{vu}{t}\] where u=4 m/s and v=0 m/s

mayankdevnani
 3 years ago
Best ResponseYou've already chosen the best response.2find accleration?

DLS
 3 years ago
Best ResponseYou've already chosen the best response.1why? they are saying initial and final velocities should be same..i.e 4m/s it shouldnt change

mayankdevnani
 3 years ago
Best ResponseYou've already chosen the best response.2no, your question said that initial velocity is 4 m/s( written in your question) and final velocity is 0 m/s(comes to rest) . ok @DLS

mayankdevnani
 3 years ago
Best ResponseYou've already chosen the best response.2Given u=4 m/s v=0 m/s t=2 s a=vu/t a=04/2 so find acceleration? can you @DLS
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