Question

A particle starts from rest and moving along
X the direction with equation x = 9 - 2t + t2.
What is displacement after 3 s?
(1) 10 m
(2) 12 m
(3) 8 m
(4) 3 m​

Answer 1

Answer:

12m

Explanation:

so the particle is moving in the x direction

we have been given the trajectory of the particle

so after t=3secs we can get the displacement just by simply puting the value

therefore

x=9-2(3)+(3)^2

=9-6+9

=12m

Answer 2

Answer:

displacement = 9-2*3 + 3^2

=9 - 6 + 9

= 12

option (2)