Get rid of the decimal first.
-0.875*1000
-875/1000=-0.875
Simplify it since both denominator and numerator is divisible by 5
1/5(-875/1000)
-175/200
Still divisible by 5
1/5(-175/200)
-35/40
Keep going
-7/8
There, now it can’t be more simplified.
145 = -16 t² + 80 t +s
s = ?
v = v0 - at
0 = 80 - at
80 = at
s = 80 t - at²/2
s = 80 t - 80t/2
s = 40 t
Finally: 145 = -16 t² + 80 t + 40 t
16 t² - 120 t + 145 = 0
We will solve this quadratic equation:
t = [120 +√ ( (-120)²- 4 · 16 · 145 )] / 32
t = [120 + √ (14400 - 9280) ] / 32
t = (120 + 71.55) / 32 = 5.98 ≈ 6 s
Answer:D) 6 seconds
Answer:
option H.
Line A increase more rapidly than B
hope it helps
Answer:
Answer attached
Step-by-step explanation:
Answer:
m = 2k/v²
Step-by-step explanation:
I think you mean solve for m, not k
Multiply both sides of the equation by 2
2 * 1/2 *(mv²) = 2 * k
Rewrite the expression.
1*(mv²) = 2*k
Multiply mv² by 1
mv² = 2*k
Divide each term by v² and simplify
mv²/v² = 2k/v²
mv²/v² cancel out and you get
m = 2k/v²