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Grade 12th passIIT JEE Entrance Exam

a particle starts with velocity 10m/s the acceleration of the particle is 2m/s^2 find
1.the velocity of the particle at t=4?
2.find displacement of the particle in 2s?
3.the displacement of the particle in 2^nd second is?

Shaila

8 Years agoGrade 12th pass

1 Answer

Eshan

Approved Tutor Answer8 Years ago

Dear student,

Using the equations of motion,

$v=u+at=10+(2)(4)=18m/s$
Displacment in 2 seconds= $s_2=ut+\dfrac{1}{2}at^2=(10)(2)+\dfrac{1}{2}(2)(2^2)=24m$
Displacement in 1 seocond= $s_1=(10)(1)+\dfrac{1}{2})(2)(1^2)=11m$

Displacement in 2^ndsecond= Displacment in 2 seconds-Displacement in 1 second
= $s_2-s_1=13m$

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

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