Question

A car accelerates uniformly from 18.5 m/s to 50 m/s in 3 seconds. Determine the acceleration of the car and the distance traveled. EXPLAIN YOUR ANSWER
Group of answer choices

15.25 m/s2 , 80.36 m

10.5 m/s2 , 71.25 m

11.00 m/s , 89.23 m

55.5 m/s2 , 45 m

Answer 1

Answer:

No answers of those options are right. Correct answer is 10.5 m/s2, 102.75 m

Explanation:

Given that,

u=18.5m/a

v=50m/a

t=3sec

a=?

d=?

We know that,

v=u+at

→a=(v-u)/t

→a=(50-18.5)/3

→a=10.5 m/s2

Again,

d=ut+1/2at^2

d=(18.5×3)+(1/2×10.5×3^2)

d=55.5+47.25

d=102.75 m

Therefore, acceleration=10.5 m/s2 and distance=102.75 m