Question

a sled with no initial velocity accelerates at a rate of 3.2 m/s squared down a hill how long does it take to sled to go 15 m to the bottom ​

Answer 1

After 3.06seconds

Step-by-step explanation:

Given that the following data are

acceleration a= 3,2m/s^2

distance s=15m,

time t=?

Applying the formula for the equation of motion we have

s=ut+1/2at^2

we no initial velocity (u=0)

substituting our given values into the expression we have

15=0*t+1/2(3.2)t^2

15=1/2(3.2)t^2

15=3.2t^2/2

30=3.2t^2

t^2=30/3.2

t^2=9.375

Squaring both sides we have

t=√9.375

t=3.06seconds

It will take the sled 3.06 seconds to get to the bottom