Answer:
INTENSITY, TOWARD THE SUN, 45 J
Explanation:
Answer:
A(i)
The solution to this question is shown on the second uploaded image
A(ii)
The final speed is 
B
The block speed after a distance L is 
Explanation:
From the question
The net force i the x-direction is mathematically represented as

From the the diagram in the second uploaded image we see that

Therefore

Making a the subject

Applying the law of motion

where u = 0 m/s and s =L

=> 
According to Energy conservation law and work theorem
Workdone by F + Workdone by gravity = change in kinetic energy
Mathematically this is given as

Since u = 0 m/s

Answer:
For adults, get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week
Answer:
im going to guess the 3rd one
Explanation: