When the shuttle bus comes to a sudden stop
to avoid hitting a dog, it decelerates uniformly
at 3.8 m/s2 as it slows from 9.8 m/s to 0 m/s.
find the time interval of acceleration for
the bus.
answer in units of s

2.58 seconds

Step-by-step explanation:

Given: the shuttle bus comes to a sudden stop  to avoid hitting a dog, it decelerates uniformly  at as it slows from to .

To Find: the time interval of acceleration for  the bus.

Solution:

Initial speed of shuttle bus

Final speed of shuttle bus

acceleration

using first equation of motion

as speed decreases acceleration will be negative

putting value in equation

It takes to decelerate to  

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

step-by-step explanation: