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CBSE Class 11-science Answered

The position-Time Graph of a body of mass 2kg is attached with the question.What is the impulse on the body at t=0s and t=4s ? Please answer
question image
Asked by prabal | 30 Sep, 2018, 01:59: PM
answered-by-expert Expert Answer
From graph,
At t=0, u= 0 and v = 3/4 m/s 
Thus, 
Impulse = m (v-u) = 2 (3/4 - 0) 
I (at t = 0) = 1.5 kg m/s 
 
At t= 4s, v= 0 and u= 3/4 m/s
Thus,
impulse = 2(0- 3/4) = -1.5 kg m/s
 
Answered by Shiwani Sawant | 01 Oct, 2018, 03:29: PM
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