The oldest lunar rock samples are approximately 4.4 billion years old and composed of anorthosite, a mineral that crystallizes and rises to the top of a lava ocean.
Highlands
The Lunar Highlands
Which are 4.4 Billion Years old
Rodney is working to identify a perpetrator. He knows that his friend, Jude, believes the victim's spouse is guilty. Hence, Rodney should avoid having unconscious bias.
Explanation:
The immediate context here is that, Rodney is in search of a perpetrator. He had beliefs on Jude, i.e. his friend. Jude further believes and knows about who the real culprit it. So there is no point for Rodney to undertake bias. He should avoid bias. The right context suggests that the victim is Innocent, but his spouse is the real culprit.
Rodney kind needs to consider this. To talk of formal terms, bias can be unconscious bias, or conformity bias etc. Before taking any discussion, we should think over everything. and we should avoid unconscious bias". Rodney should avoid unconscious bias.
Part a)
kinetic energy of the hammer will be

here we know that
m = 4 kg
v = 6 m/s
now by the equation of kinetic energy we have


Part b)
for finding the force we will have

here we know that



now from above equation we have


now by Newton's II law we have


so it requires 720 N.