Question

A mechanic strikes a nail with a hammer moving with a velocity of 20 m/s. The hammer comes to rest in 0.02 s after striking the nail. Calculate the acceleration of the nail.

Answer 1

Answer:

A=v/t=0-20/0.02=-1000m/s2

Explanation:

Answer 2

Explanation:

Given :

• Initial Velocity ( u ) = 20 m/s

• Final Velocity ( v ) = 0 m/s

• Time Taken ( t ) = 0.002 s

$\underline{\bigstar\:\textsf{According to the given Question :}}$

$:\implies\sf Acceleration=\dfrac{Final\: Velocity-Inital\: Velocity}{Time}\\\\\\:\implies\sf Acc^{n} = \dfrac{0 - 20}{0.002}\\\\\\:\implies\sf Acc^{n} = \dfrac{ - 20}{0.002}\\\\\\:\implies\sf Acc^{n} = \dfrac{ - 20 \times 1000}{2}\\\\\\:\implies\sf Acc^{n} = - 10 \times 1000\\\\\\:\implies\underline{\boxed{\sf Acc^{n} = - 10000\:m\:s^{-2}}}$

⠀

$\therefore\:\underline{\textsf{Acceleration of hammer would be \textbf{- 10000 m s ^{\text{-2}} }}}.$