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Q. |
Speed of Earth when a rock of mass 60 kg falling towards Earth with speed of 20 m s-1 is {{}} |
A. | 2.4 × 10-22 m s-1 |
B. | 3.5 × 10-33 m s-1 |
C. | −2.0 × 10-22 m s-1 |
D. | −3 × 1034 m s-1 |
Answer» C. −2.0 × 10-22 m s-1 |
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