AP EAMCET202023 Sep 2020Morning ShiftPhysicsMotion in One DimensionActual
The displacement of a particle moving with uniform acceleration in time t is given by S = 30 t + 5 t 2 , its initial velocity is _____
Options
- A35   m   s - 1
- B30   m   s - 1
- C40   m   s - 1
- D45   m   s - 1
Correct answer
B. 30   m   s - 1
Step-by-step solution
Given that displacement S = 30 t + 5 t 2 Velocity is given by v = d s d t ⇒ v = d 30 t + 5 t 2 d t ⇒ v = 30 + 10 t Initial velocity at t = 0 v = 30 + 10 0 = 30   m   s - 1