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Question
An electron of mass 9 × 10−31 kg is moving with a linear velocity of 6 × 107 ms−1. Calculate the linear momentum of electron.
Solution
Mass of electron = m = 9 × 10−31 kg
Velocity of electron = v = 6 × 107 ms−1
Momentum of electron = P = ?
We know, P = mv
P = 9.1 × 10−31 × 6 × 107
P = 54 × 10−24 kg ms−1 or Ns
= 54 × 10−24 kg ms−1 Ns
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