An object of mass 100kg is accelerateduniformly from a velocity of 5m/

1.	An object of mass 100kg is accelerateduniformly from a velocity of 5m/s to8 m/s in 6s Calculate the initialand final momentum of the objects.Also find the magnitudeof forceexeated on theObject
Answer» ANSWER: Initial VELOCITY of the object (u) = 5 m/s Final velocity of the object (v) = 8 m/s Mass of the object (m) = 100 KG Time take by the object to accelerate (t) = 6 s Initial momentum = mu = 100 × 5 ⇒ mu = 500 kg m/s Final momentum = MV = 100 × 8 ⇒ mv = 800 kg m/s Let us calculate the Force exerted on the object (F) F = (mv – mu) / t F = (800 – 500)/6 F = 300 / 6 F = 50 N Initial momentum of the object is 500 kg m sˆ1. Final momentum of the object is 800 kg m sˆ1. Force exerted on the object is 50 N.

An object of mass 100kg is accelerateduniformly from a velocity of 5m/s to8 m/s in 6s Calculate the initialand final momentum of the objects.Also find the magnitudeof forceexeated on theObject

Answer»

Initial VELOCITY of the object (u) = 5 m/s

Final velocity of the object (v) = 8 m/s

Mass of the object (m) = 100 KG

Time take by the object to accelerate (t) = 6 s

Initial momentum = mu = 100 × 5

⇒ mu = 500 kg m/s

Final momentum = MV = 100 × 8

⇒ mv = 800 kg m/s

Let us calculate the Force exerted on the object (F)

F = (mv – mu) / t

F = (800 – 500)/6

F = 300 / 6

F = 50 N

Initial momentum of the object is 500 kg m sˆ1.

Final momentum of the object is 800 kg m sˆ1.

Force exerted on the object is 50 N.