Question

a bullet moving at 35 metre per second penetrates 3.5 mm in a wooden plank and comes to rest assume in uniform radiator relation find the uniform acceleration of the bullet

Answer 1

${v}^{2} - {u}^{2} = 2as$

$0 - 35 {}^{2} = 2a \times 35 \div 1000$
-35×35×1000=2a × 35
-35000=2a
a = -35000/2
a = -17500m/s^2