Question

21 p?=u² + 2as u= 12 a = -3 s= 18 (a) Work out a value of v.

Answer 1

Answer:

6 or -6

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

• $v^2 = 12^2 + 2(-3)(18)$
• $v^2 = 144 + (-6)(18)$
• $v^2 = 144- 108$
• $v^2 = 36$

Step 2: Take square root of both sides.

• $\sqrt{v^2} =$ ± $\sqrt{36}$
• $v =$  ± $\sqrt{36}$
• $v = 6$ or $-6$

Therefore, the answer is 6 or -6.