Step-by-step explanation:
1. kinetic energy = 1/2 mass× velocity²
mass= 5.2. velocity =2.4
thus, 1/2 × 5.2×2.4×2.4
= 14.97joule
2. potential energy = mass× acceleration × height
mass=5.2. height=5.8 g=9.8
=5.2×5.8×9.8
= 295.5 joule
3. mechanical energy = potential energy + kinetic energy
= 295.5+14.97
=310.47 joule
hope it helps :)
