In a velocity-time graph, the area under the curve represents the distance.
The distance traveled from 10s to 18 s is
Final Answer: The distance traveled is 40 m from time 10 s to 18 s.
The earth exerts a force of 1.00 N on an object in free fall. What is the object’s mass?
1 answer:
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The mechanical energy of the train is 1,451,222.53 J
The given parameters:
mass of the car, m = 5500 kg
speed of the car, v = 55 km/h = 15.278 m/s
height of the hill, h = 15 m
To find:
- the mechanical energy of the train
The mechanical energy of the train = kinetic energy + potential energy
The kinetic energy (KE) at the train at bottom hill is calculated as:
The potential energy (P.E) of the train on top hill is calculated as:
P.E = mgh
P.E = 5500 x 9.81 x 15
P.E = 809,325 J
The mechanical energy of the train = K.E + P.E
The mechanical energy of the train = 641,897.53 J + 809,325 J
The mechanical energy of the train = 1,451,222.53 J
Thus, the mechanical energy of the train is 1,451,222.53 J
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