H2P-9
Uniform circular motion
H2 Physics · JC 1 · Medium · Uniform circular motion
A 0.30 kg ball is whirled in a horizontal circle at constant speed. At point A its velocity is due east; a quarter of a revolution later at point B its velocity is due north, still with speed 4.0 m s⁻¹. What is the magnitude of the change in momentum from A to B?
- 1.2 kg m s⁻¹
- 1.7 kg m s⁻¹
- 2.4 kg m s⁻¹
- 3.4 kg m s⁻¹
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