Asked by soini sheefeni
A car has an initial speed of 25m/s and a constant deceleration of 3m/s^2. Determine the velocity of the car when t=4s. What is the displacement of the car during the 4-s time interval?
Answers
Answered by
smart
i do not know
what is the algebraic expression that'll help me solve this
the formula please
what is the algebraic expression that'll help me solve this
the formula please
Answered by
smart
u should ask ur mom🙂✌️
Answered by
Anonymous
a = -3 m/s^2
Vi = 25 m/s
final t = 4 s
===========
v = Vi - a t
x = Xi + Vi t - (1/2) a t^2
so
v = 25 - 3 * 4 = 25 - 12 = 13 m/s at t = 4
x - Xi = 25 *4 - (1/2) 3 *16
= 100 - 24
= 76 meters
or just average speed = (13 + 25) / 2
so distance = (13+25) *4/2 = 76 meters
Vi = 25 m/s
final t = 4 s
===========
v = Vi - a t
x = Xi + Vi t - (1/2) a t^2
so
v = 25 - 3 * 4 = 25 - 12 = 13 m/s at t = 4
x - Xi = 25 *4 - (1/2) 3 *16
= 100 - 24
= 76 meters
or just average speed = (13 + 25) / 2
so distance = (13+25) *4/2 = 76 meters
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.