What are some common mistakes students make with velocity?

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Answer 1 · 2018-05-27T10:14:51

See Explanation.

Student are always confused in velocity and speed.
Mostly students assume velocity as scalar quantity not as vector quantity.
If someone states that a object has velocity $-5 m/s$ has significance but; if someone states that a object has speed $-5 m/s$ does not posses significance. Students cannot understand that.
Students cannot differentiate between speed and velocity.
While applying the equations,
$v=u+at$
$v^2=u^2+2as$
Students generally do not check whether velocity is zero at any time or not.
Student are unknown that speed is modulus of velocity.
Speed = IVelocityI
Student may get wrong with the basic of the 2-D motion.