AP EAMCET202421 May 2024Morning ShiftPhysicsMotion in One DimensionActual
A body of mass 1.5 kg is moving towards south with a uniform velocity of 8 ~ms ⁻¹ . A force of 6 N is applied to the body towards east. The displacement of the body 3 seconds after the application of the force is
Options
- A24 m
- B30 m
- C18 m
- D42 m
Correct answer
B. 30 m
Step-by-step solution
aligned & m =1.5 ~kg , ~F =6 ~N & v =-8 j , t =3 ~s & a = ( f ~m ) i = ( 6 1.5 ) i =4 i aligned aligned & Displacement, s = v t + 1 2 a t ^2 & ~s =-(8 j ) 3+ 1 2 (4 i ) 9=-24 j +18 i & ~S = (18)^2+(-24)^2 =30 ~m aligned