Question

A gun fires a bullet of mass 50 g. The bullet moving with a velocity of 100m/s strikes a sand bag and gets embedded after travelling 10cm.calculate
1.the resistive force exerted by the sand on the bullet and 2.the time taken by the bullet to come to rest
BRAINLIST 20 POINT AND I FLLW

Answer 1

Hi dear brother @Shreyansh2929....

Hope this ans may help u..

Mass of bullet (m) = 50 g = 0.050 kg 

initial velocity of bullet (u) = 100m/s

distance travelled by bullet (s) = 10 cm = 0.1 m 

We know , 

v²  - u² = 2 as 

⇒0 - (100)² = 2 x a x 0.1

⇒-1000 /0.1 = 2a 

⇒-10000 = 2a 

⇒a = - 5000 m/s²

resistive force = m x a 

= 0.05 x(- 5000) 

= - 250 N 

For to know the value Time taken ...

We know v = u + at

⇒0 = 100 - 5000 t 

⇒-100 /5000 = t 

⇒t = 0.02 seconds 

pls mark brainliest if u got ur ans

Thanx 4 the question.