If a flea can jump up to 45 cm above its initial resting 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 $, where $ v $ is the initial velocity, $ g $ is the acceleration due to gravity (approximately 9.8 m/s²), and $ h $ is the height (0.45 m). Solving for $ v $, we get $ v = \sqrt{2 \times 9.8 \times 0.45} \approx 3.0 $ m/s.

If a Flea Can Jump Up to 45 Cm Above