Motion of a particle is described by equation u = at . distance travelled by particle in first 4 sec

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2.Motion in Straight Line

easy

The motion of a particle is described by the equation $u = at$. The distance travelled by the particle in the first $4$ seconds

A

$4a$

B

$12a$

C

$6a$

D

$8a$

Solution

(d)$u = at,\;x = \int_{}^{} {u\;dt} = \int_{}^{} {at\;dt = \frac{{a{t^2}}}{2}} $
For $t = 4\;\sec ,\;x = 8a$

Standard 11

Physics

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