Aroller coaster accelerates at a rate of - 3 m/s ^ 2 from 25 m/s at the bottom of a hill to 10 m/s s at the top how long does it take the coaster to reach the top of the hill ?

5 seconds

Explanation:

Acceleration,

Where v and u are the final and initial velocities of the roller coaster respectively, t is the time taken for the coaster to reach the top of the hill.

Making t the subject then

Substituting -3 m/s2 for a since it decelerates, 25 m/s for u, then 10 m/s for v then

no simpler subs form complex ones. synthesise = make

radial fractures in a piece of glass look most like which of the following?

a. spokes of a wheel

b. a circle

c. a zig zag

d. none of the above

the correct answer is a. spokes of a wheel

hope this (: