Question

the velocity of a body moving in a straight line at the end of 5s is 30m/s ,at the end of 12s is 58m/s and at the end 22s, it is 98m/s. the body is moving with

Answer 1

Let's take the time interval b/w 5 to 12 sec.

So : u = 30 m/s, v = 58 m/s, t = 12-5 = 7 s

So by first equation,

$v = u + at\\58 = 30 + 7a\\28 = 7a\\a = 4 ms⁻²$

Again let's do the same for 12 to 22 sec

So : u = 58 m/s, v = 98 m/s, t = 22-12 = 10 s

So by first equation,

$v = u + at\\98 = 58 + 10a\\40 = 10a\\a = 4 ms⁻²$

So the body is moving with uniform acceleration.

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Answer 2

Answer:

THE ACCELERATION IS CONSTANT

Explanation:

Let's take the time interval b/w 5 to 12 sec.

So : u = 30 m/s, v = 58 m/s, t = 12-5 = 7 s

So by first equation,

v = u + at 58 = 30 + 7a\\28 = 7a\\a = 4 ms⁻2

v=u+at

58=30+7a

28=7a

a=4ms⁻²

Again let's do the same for 12 to 22 sec

So : u = 58 m/s, v = 98 m/s, t = 22-12 = 10 s

So by first equation,

v = u + at\\98 = 58 + 10a\\40 = 10a\\a = 4 ms⁻²

v=u+at

98=58+10a

40=10a

a=4ms⁻²

So the body is moving with uniform acceleration.

Please mark it brainliest if it was useful.