Which has more momentum, a $6 k g$ $6kg$ object moving at $7 \frac{m}{s}$ $7m/s$ or a $3 k g$ $3kg$ object moving at $5 \frac{m}{s}$ $5m/s$ ?

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Answer 1 · 2015-12-10T18:06:33

The 6 kg object has more momentum.

You work out the momentum $P$ $P$ of an object by multiplying the mass by the velocity:

$P = m \times v$ $P=mxxv$

So for the 1st object:

$P = 6 \times 7 = 42 k g . m . s^{- 1}$ $P=6xx7=42" "kg.m.s"^(-1)$

For the 2nd object:

$P = 3 \times 5 = 15 k g . m . s^{- 1}$ $P=3xx5=15" "kg.m.s"^(-1)$

Which has more momentum, a 6kg6kg object moving at 7ms7m/s or a 3kg3kg object moving at 5ms5m/s?