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7nadin3 [17]
2 years ago
7

A compact car has a maximum acceleration of 4.0 m/s2 when it carries only the driver and has a total mass of 1200 kg . you may w

ant to review ( pages 108 - 109) . part a what is its maximum acceleration after picking up four passengers and their luggage, adding an additional 400 kg of mass?
Physics
2 answers:
deff fn [24]2 years ago
4 0

Answer : The maximum acceleration will be 3.0 m/sec^{2}.

Explanation : We can calculate the force using the formula given below;

F = m . a ;

(F - Force; m - mass and a - acceleration);

given in the problem; mass (1) - 1200 kg; acceleration (1) - 4 m/sec^{2}

So, on substituting we get,

F = m_{1} a_{1} = 1200 X 4 = 4800 N; we get F = 4800 N

Now, when mass 400 kg is added then mass (2) will be 1600 kg and acceleration has to be found;

Here, the force remains the same; so it can be equated;

m_{1} a_{1} = m_{2} a_{2};

So, 1200 X 4 = (1200 + 400) x a_{2}

Therefore, the answer will be a_{2} = 3.0 m/sec^{2}

juin [17]2 years ago
3 0
<span>Let F be the maximum thrust of the car's engine. Then F = ma = 1300 x 3.0 = 3900N. With the added load, F remains the same, but we now have F = 1700a giving a = F/1700 = 3900/1700 = 2.3 m/s².</span>
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