Asked by Willie
Two grenades, A and B, are thrown horizontally with different speeds from the top of a cliff 70 m high. The speed of A is 2.50 m/s and the speed of B is 3.40 m/s. Both grenades remain in air for 3.77 s. Assume that the acceleration due to gravity is 9.86 m/s^2. What is the distance between A and B if they are thrown along the same straight line?
Answers
Answered by
MathMate
The horizontal distances are given by
Da(t) = 2.5t m
Db(t) = 3.4t m
Distance between A and B after 3.77 seconds is therefore
Distance = Db(3.77)-Da(3.77)
assuming the grenades are thrown in the same straight line <i>in the same direction.</i>
The acceleration due to gravity has no bearing on the distance between A and B, if air resistance can be ignored.
Da(t) = 2.5t m
Db(t) = 3.4t m
Distance between A and B after 3.77 seconds is therefore
Distance = Db(3.77)-Da(3.77)
assuming the grenades are thrown in the same straight line <i>in the same direction.</i>
The acceleration due to gravity has no bearing on the distance between A and B, if air resistance can be ignored.
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