Answer:
x = -|- 2/5
Step-by-step explanation:
there are two opposite solutions:
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
1) m-13=7
2)m-13=7
m-13+13=7+13
m=20
so he had $20 he spent $13 so $7 was left!
BRAINLIEST???
Answer:
sorry you forgot to add the graph link in with your question
Step-by-step explanation:
