Question

HE GUYS I REQUEST YOU PLZ ANS ME THIS QUES
i am having my exam on 18 th ​

Answer 1

Answer:

v = dx / dt ( slope of x-t graph )

V1 = 20 / 4

= 5 m/s

V2 = -20/4

= -5 m/s

impulse = ∆p = pf - pi

= mv2 - mv1

= m ( v2-v1)

= 1 ( -5- - 5)

= -10 kg m/s

| impulse | = | -10|

= 10 kg m / s