A440 kg roller coaster car is going 26 m/s when it reaches the lowest point on the track. if the car started from rest at the top of a hill, how much higher was that point on the track than the lowest point? (use g = 9.80 m/s2, and ignore friction.)
17 m
23 m
34 m
69 m
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Ответ:
The correct answer is 34.5 m.
Explanation:
The equation of motion is as follows;
Here, v is the final velocity, u is the initial velocity, a is the acceleration and s is the distance.
It is given in the problem that a car starts from rest at the top of a hill. A 440 kg roller coaster car is going 26 m/s when it reaches the lowest point on the track.
Here, g is the acceleration due to gravity.
Put g= 9.80 m/s^2, u=0 and v= 26 m/s.
Therefore, the correct answer is 34.5 m.
Ответ:
one step UVU i dont even know XD there is no picture or graph?
Explanation: