Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration?

select one:

a. 3.21 m/sec2

b. 1.75 m/sec2

c. 9.80 m/sec2

d. 2.24 m/sec2

d. 2.24 m/s²

Explanation:

Acceleration: This is defined as the rate of change of velocity. The S.I unit of acceleration is meter per seconds squared. (m/s²). Acceleration is a vector quantity, and its is represented in one of newtons equation of motion.

which is expressed below.

S = ut + 1/2at² Equation 1

making a the subject of the equation above,

a =2(S-ut)/t² Equation 2

Where a = acceleration, S =distance, u = initial velocity, t = time taken

Given: s= 28 m, u = 0 (from rest), t = 5.00 s.

Substituting these values into equation 2

a = 2(0×5 + 28)/5²

a = 56/25

a = 2.24 m/s²

Therefore the acceleration of the body is 2.24 m/s²

The right option is d. 2.24 m/s²

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