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Answer» Explanation: 15. 2. - 1400 N Initial velocity U = 60 km/hr = 16.66 m/s FINAL velocity v = 0 Accerelation a = ? Displacement S = 50 m By third equation pf motion v² = u² + 2 aS (0)² = (16.66)² + 2 × a× 50 0 = 277.55 × 100 a a = - 277.55 / 100 a = - 2.7755 m/s² Force = mass × accerelation F = 504 × - (2.7755) F = - 1398.852 N = - 1400 N 16. 3. same accerelation Because both fall under the ACTION of gravitational force |
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