Question

13. A uniform solid ball first rolls purely along a floor,
then up a ramp inclined at 30°. It momentarily
stops when it has rolled 1.5 m along the ramp. Its
initial speed is approximately
(1) 2 m/s
(2) 3 m/s
(3) 4 m/s
(4) 5 m/s

Answer 1

Answer:

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Explanation:

Answer 2

Answer:use E=E (rot)+ E (trans)

option 2) 3m/s

Explanation: