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a ball is rolling down a hill at +2.0 m/s. the ball is uniformly accelerating at 4.0 m/s^2. what will the balls velocity be 3.0 s later?
a. 10
b. 5.3
c. 14
d. 13

Respuesta :

the answer would be c, 14 
Here, You need to apply first equation of Kinematics, 
v = u + at
Here, u = 2 m/s
a = 4 m/s²
t = 3 s

Substitute their values, 
v = 2 + 4*3
v = 2 + 12
v = 14 m/s

In short, Your Answer would be Option C

Hope this helps!