How does a speedometer and odometer work?
1 answer:
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Answer:
a) 112.5 m
b) 15.81s
Explanation:
a)We can use the following equation of motion to calculate the velocity v of the rocket at s = 500 m at a constant acceleration of a = 2.25 m/s2
After the engine failure, the rocket is subjected to a constant deceleration of g = -10 m/s2 until it reaches its maximum height where speed is 0. Again if we use the same equation of motion we can calculate the vertical distance h traveled by the rocket after engine failure
So the maximum height that the rocket could reach is 112.5 + 500 = 612.5 m
b) Using ground as base 0 reference, we have the following equation of motion in term of time when the rocket loses its engine:
t = 15.81 or t = -6.33
Since t can only be positive we will pick t = 15.81s
Answer:
a)
b)
Explanation:
Let the first ball throw be the point of reference, we can have following the equation of motion:
1st ball:
2nd ball:
a)When the 2 balls collide they are at the same spot at the same time:
b) The first ball is at its highest point when v = 0. That is
After this time, the 2 balls would have traveled through a distance of
Since we can solve for H