# What are some common mistakes students make with velocity?

May 27, 2018

See Explanation.

#### Explanation:

1. Student are always confused in velocity and speed.
2. Mostly students assume velocity as scalar quantity not as vector quantity.
3. If someone states that a object has velocity $- 5 \frac{m}{s}$ has significance but; if someone states that a object has speed $- 5 \frac{m}{s}$ does not posses significance. Students cannot understand that.
4. Students cannot differentiate between speed and velocity.
5. While applying the equations,
$v = u + a t$
${v}^{2} = {u}^{2} + 2 a s$
Students generally do not check whether velocity is zero at any time or not.

6. Student are unknown that speed is modulus of velocity.
Speed = IVelocityI

7. Student may get wrong with the basic of the 2-D motion.