Monday, 1 December 2014

Answers to calculations on force

  1. 1.       F= ma = 2000 x 3 = 6000 N
  2. 2.       F= ma = 90 x (-4) = -360 N
  3. 3.       F= ma = 0.05 x (-60) = -3 N
  4. 4.       F = ma = 10 000 000 kg x 10 = 100 000 000 N = 1 x 108 N
  5. 5.       F = ma = 70 x (-14) =- 980 N
  6. 6.       F= ma = 1000 x (-50) =- 50 000 N
  7. 7.       F = ma = 0.1kg x 5 = 0.5 N



1a           -2.5m/s2                                         b             -2500N
2a           5m/s2                                    b             450 N
3a           0.25m/s2              `                 b             3N
4a           - 1500 m/s2                            b             -30 N
5              500kg
6              10m/s2
7              a = - 3m/s                                          -2250 N










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