Question

Wonder Woman (vi = 0) senses Ares' presence. She runs East towards the water (100 m away) and reaches a final velocity of 30 m/s. Assuming she accelerated at a constant rate for 7 seconds, her acceleration was ______ m/s². [SHOW YOUR WORK and round to two decimal places when necessary]

a) 2.14 m/s²
b) 4.29 m/s²
c) 6.43 m/s²
d) 8.57 m/s²

Answer 1

The acceleration of Wonder Woman is 4.29 m/s².

Step-by-step explanation:

To find the acceleration of Wonder Woman, we can use the equation:

v = u + at

Where:

v = final velocity = 30 m/s

u = initial velocity = 0 m/s

t = time = 7 s

Substituting the values into the equation, we get:

30 = 0 + a * 7

Simplifying the equation, we find that the acceleration of Wonder Woman is 4.29 m/s².

Therefore, the answer is b) 4.29 m/s².