Answer:
-9.6
Step-by-step explanation:
mark as brainliest
Answer:
20%
Step-by-step explanation:
cross multiply then divide!
Answer:
Number 3
A= -6
B= the third one
4. for this one, just do -1, 0, 1, 2, 3, 4
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
If we write 
where we see 
in the equation and set the result equal to 
, we get the result.
