# Question on Motion

#### Tinky

An object has an initial velocity 2.42
+-2.08
ms-1. The acceleration is 3.97
+8.33
ms-2. Find the magnitude of the velocity after time 6.69s in unit of ms-1.

#### Attachments

• 74 KB Views: 2

#### Cervesa

you are given the components of initial velocity and acceleration

you should be familiar with the kinematics equation $v_f = v_i +at$

calculate both components of final velocity using the equation above.

the magnitude of the final velocity is $|v| = \sqrt{(v_{fx})^2 + (v_{fy})^2}$