3 years ago

Predict: Will a 1500 kg car moving at the same speed as the tennis ball have

1 answer:

4 0

The car will have more momentum because it has a greater mass. Momentum= mass x velocity therefore if both the objects have the same velocity the object with a greater mass will have more momentum

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3 years ago

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4 years ago

What is the kinetic energy,in J,of an Ar atom moving at a speed of 650 m/s

Sonbull [250]

Answer:

1.40 × 10⁻²⁰ J

Explanation:

Step 1: Calculate the mass of 1 atom of argon

The molar mass of argon is 39.95 g/mol, that is, 6.02 × 10²³ atoms of Ar have a mass of 39.95 g. We can use this relation to find the mass of 1 atom of Ar.

$\frac{39.95g}{1mol} \times \frac{1mol}{6.02 \times 10^{23}atom } =6.64 \times 10^{-23}g/atom$