H2P-1
Uniform circular motion
H2 Physics · JC 1 · Medium · Uniform circular motion
A 0.40 kg ball is whirled at constant speed in a horizontal circle on a smooth table. At point A its velocity is due north; a quarter of a revolution later at point B its velocity is due east. The speed is 5.0 m s⁻¹. What is the magnitude of the change in momentum from A to B?
- 2.0 kg m s⁻¹
- 2.8 kg m s⁻¹
- 4.0 kg m s⁻¹
- 5.7 kg m s⁻¹
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