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A ball of 200 g mass is moved with 20 m/s, anddecreases to 10 m/s in 5 seconds due to air friction.So, force of friction due to air is |
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Answer» Answer: 0.4N Explanation: FORCE(F) = mass(m) * acceleration(a) Mass is 0.2kg (It should be in its SI unit for CALCULATION) But we DONT have acceleration Acceleration formula But we can use its absolute value ( F = ma F = 0.2 * 2 F = 0.4N |
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