The description and the full details of the question can be found in the image attached below.
Answer:
7840 J
Step-by-step explanation:
From the question in the image attached below, the objective was to find the kinetic energy K of the car at the top of the loop.
Given that;
mass = 50 kg
height h = 48 m
loop of the radius R = 16 m
The kinetic energy K of the car was as a result of the conversion of potential energy.
Therefore, the kinetic energy can be calculated by using the formula:
K.E = mg( h - 2R)
K.E = (50 kg × 9.8 m/s²) (48 m - 2(16 m))
K.E = 490 × 16 J
K.E = 7840 J