KCET2016PhysicsMotion in One Dimension
A body falls freely for ( 10 sec ). Its average velocity during this journey (take ( g=10 ~ms ⁻² ) )
Options
- A( 100 ~ms ⁻¹ )
- B( 10 m s⁻¹ )
- C( 50 m s⁻¹ )
- D( 5 ~ms ⁻¹ )
Correct answer
C. ( 50 m s⁻¹ )
Step-by-step solution
Given, body falls freely for t=10 s ; g=10 ~ms ⁻² Average velocity = Total displacement Total time Now total displacement S=u+ 1 2 g t²=0+ 1 2 10 10² Total displacement =500 ~m Therefore, average velocity = 500 10 =50 ~ms ⁻¹