smartdumb smartdumb

01-09-2019
Physics

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8. A steel ball rolls from rest down a ramp with an acceleration of -3 m/s/s. What is its velocity after rolling for 5 s?
-3 m/s
B. 5 m/s
C. -15 m/s
D. 50 m/s

8 A steel ball rolls from rest down a ramp with an acceleration of 3 mss What is its velocity after rolling for 5 s 3 ms B 5 ms C 15 ms D 50 ms class=

Respuesta :

Dlalex2316 Dlalex2316

01-09-2019

Answer:

C. -15m/s

Explanation:

using formula, v = u + at

where v = final velocity

u = initial velocity = 0

a = acceleration = -3m/s/s

t = time = 5sec

=> v = 0 + -3×5 = -15m/s

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