Question

Position (x) of an object is related to time (t) as x = t ^ 3 - 12t where (x) is as in metre and (t) in second. Find the acceleration of the object when its velocity is zero.​

Answer 1

Answer:

Answer

AnswerVelo city of the part icle

icle dvt

td x

x

x v= 3 t

t 2

t 2 −12 m/s

t 2 −12 m/s Let the time be t when its velocity is zero.

t 2 −12 m/s Let the time be t when its velocity is zero.∴ 0=3t

t 2 −12 m/s Let the time be t when its velocity is zero.∴ 0=3t 2

t 2 −12 m/s Let the time be t when its velocity is zero.∴ 0=3t 2 −12 = t=2 s

t=2 s∴ Posi tion of the parti cle at this ins tant x

t=2 s

s

s =20 + 2

2 −12 (2) =4 m

Hope it helps

Answer 2

Answer:

12m/s^2

Explanation: