If a flea can jump up to 45 cm above its initial starting point, with what speed is it able to leave the ground when jumping?
A) 2.1 m/s
B) 3.0 m/s
C) 8.8 m/s
D) 4.2 m/s

Question

Quizplus · Accepted Answer

The speed can be calculated using the formula for the maximum height of a projectile: $ v^2 = 2gh $. Here, $ g = 9.8 \, \text{m/s}^2 $ and $ h = 0.45 \, \text{m} $. Solving for $ v $, we get $ v = \sqrt{2 \times 9.8 \times 0.45} \approx 3.0 \, \text{m/s} $.

If a Flea Can Jump Up to 45 Cm Above