An object has a momentum of 4,000 kg-m/s and a mass of 115 kg. it crashes into another object that has a mass of 100 kg. if the momentum is conserved, what is the new velocity? round to the nearest hundredth.

Answer

19 m/s

Explanation

Finding the velocity of the initial object

Momentum=mass × velocity

P=m×v

4000=115 × v

v=4000/115 =34.78⇒35m/s

Total momentum after the collision

Because the momentum is conserved, the total momentum afterwards =4000kg-m/s

Total mass after collision

Total mass = mass of initial object + mass of second object

Total mass= 115+100= 215kg

Finding new velocity after collision

v=p/m

=4000/215

=18.60

=19m/s

to treat tumors in the body

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.