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A body of mass 2kg has an initial speed ...

A body of mass 2kg has an initial speed 5 m/s. A force acts as it for some time in the direction of motion. The force - time graph is shown in figure. Find the final speed of the body.

Text Solution

Verified by Experts

Area of OAF `= (1)/(2)xx2xx4=4`
Area of BGHC `= (1)/(2)(4+2.5)xx0.5=1.625`
Area of ABGF `= 2xx4=8`
Area of CDEH `= 2xx2.5=5`
Total area = Change in mementum = 18.625.
`m(v-u)=18.625 V =(18.625)/(2)+5`
`V=14.25 m//s`
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