A particle moves along the x axis according to the equation x = 6t², where x is in meters and t is in seconds. Therefore:

A. the acceleration of the particle is 6 m/s²

B. t cannot be negative

C. the particle follows a parabolic path

D. each second the velocity of the particle changes by 9.8 m/s

E. none of the above

Question

Adrianna Mills

Physics

1 January, 14:33

A particle moves along the x axis according to the equation x = 6t², where x is in meters and t is in seconds. Therefore:

A. the acceleration of the particle is 6 m/s²

B. t cannot be negative

C. the particle follows a parabolic path

D. each second the velocity of the particle changes by 9.8 m/s

E. none of the above

+3

Answers (1)

Know the Answer?

Keon Avery · Answer 1

Answer is E

time can be negative.

A is not true because a = d2 x d t2 = 12 m / s2

C: question already said that particle move along x-axis, which is not parabola path.

D: velocity is dx dt = 12t, therefore velocity changes by 12 m/s and not 9.8 m/s

So we are left with E.