The atomic mass of copper is 64.93
For uniform acceleration (or deceleration in this case), you use the formula:
Vf = Vi + at
Vi = 22 m/s
Vf = 0 (coming to a stop)
t = 5 sec
Plugging everything into the formula gives you:
0 = 22 + 5a
-22 = 5a
a = -22/5 or -4.4 m/s^2
Hope this helps!
1. Mary is 500 Meters away from her starting point because the hypotenuse represents the displacement of Mary from A to O.
2. Since Mary took the long way, she walked a total of 700 Meters. (Because she went from A to O to B, and the sum of 300 and 400 is 700).
3. Mary walked 140 Meters per minute, because S=D/T. so speed = 700 divided by 5, 140.
Answer:
100 N force have to lift for the board to be carried
Explanation:
Given data
L = 3.00 m
F1 = 60.0 N
w = 160 N
to find out
magnitude F2 of force
solution
we know that F1 and F2 sum is equal to weight of board
so that we can say
F1 + F2 = W
so
F2 = W - F1
put the value W and F1
F2 = 160 - 60
F2 = 100 N
so 100 N force have to lift for the board to be carried
First you have to find the work, to do that, you have multiply the power and time.
56 x 19 = 1064 J
By doing this, you have the work. To find the distance, you have to divide the work by the force.
1064/46 = 23.13043478 m
You can round this answer to 23.13 m