Question

A frog leaps up from the ground and lands on a step 0.1 m

above the ground 2 s later. We want to find the vertical
velocity of the frog at the moment that it left the ground.
We can ignore air resistance.
Which kinematic formula would be most useful to solve
for the target unknown?

Answer 1

Δx=v0t+1/2*at^2

Step-by-step explanation:

The correct Khan Academy answer

Answer 2

v=v0+at

Step-by-step explanation:

Khan Academy answer