Question

Through slow on land the leather back turtle holds the record for the fastest water speed of any reptile. The largest leather back yet discovered could swim at a speed of 9. 78 m/s. If it's KE was 60, 800. 0J, what's the mass

Answer 1

Answer: 1271.32 kg

Step-by-step explanation:

Given: The speed of turtle with largest leather back= 9.78 m/s

It's Kinetic energy = 60800 joules

We know that with mass 'm' and speed 'v', the formula kinetic energy is given by

$K.E.=\frac{1}{2}mv^2\\\\\Rightarrow\ m=\frac{2K.E.}{v^2}\\\\\Rightarrow\ m=\frac{2\times60800}{(9.78)^2}\\\\\Rightarrow\ m=1271.322886\ kg$

Hence, the mass of turtle= 1271.32 kg