Answer:
d. -y direction
Explanation:
Given that
m₁=0.145 kg, u₁=2.1 j m/s
m₂= 0.0570 kg , u₂ = -8.8 j m/s
We know that linear momentum is the product of mass and velocity
P= Mass x velocity
Therefore the total linear momentum P
P= m₁u₁+ m₂u₂
Now by putting the values
P = 0.145 x ( 2.1 j) + 0.057 ( - 8.8 j) kg.m/s
P =0.3045 j - 0.5016 j kg.m/s
P= - 0.1971 j kg.m/s
P= 0.1971 (- j) kg.m/s
So we can say that the direction of the liner momentum of the system will be in the negative y -direction.
d. -y direction
Answer:
<h2>1139.5 J</h2>
Explanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
work done = 265 × 4.3 = 1139.5
We have the final answer as
<h3>1139.5 J</h3>
Hope this helps you
Answer:
<h2>B) Newton's 2nd law</h2>
Explanation:
<h2>From; force= mass × acceleration </h2><h2> f= m×a </h2><h2>where a(acceleration)= velocity/time</h2><h3> force = mv/t</h3><h3>But momentum(p) = Mass × velocity </h3><h2>hence force =p/t </h2><h3>that is Momentum = force × time ( Newton's 2nd law)</h3>
