Answer:
Full proof below
Step-by-step explanation:
A : 10000 J
B: 625 J
C: 2500 J
Step-by-step explanation:
Step 1:
We know that ,
Kinetic Energy is given by ((1/2) × m × V²) J
where m = Mass of substance
V = Velocity
Step 2:
In first case, m= 50 kg, V=20 m/s
Kinetic energy = 0.5 × 50 × 20 ×20
= 10000 J
In second case, m= 50 kg, V=20 m/s
Kinetic energy = 0.5 × 50 × 5 ×5
= 625 J
In Third case, m= 50 kg, V=10 m/s
Kinetic energy = 0.5 × 50 × 10 ×10
= 2500 J
I believe that the answer would be $9.52, once you calculate both the sales tax and the tip.
25-percent decrease =25-(60%×25%)
25-60%×25
(1-60%)×25=(100%-60%)×25
40%×25=40÷100×25
40×25÷100
1000÷100
10ans
Answer:
The correct answer is b=9
