Concept explainers
To show: The speed of projectile leaves the ground is equal to speed of strike.
Explanation of Solution
Given:
The time of ascent is equal to time of descent and firing level and landing level are equal.
Formula used:
The equation of velocity
Calculation:
When the body is launched from the surface of earth it has maximum velocity. Let’s consider its velocity viand when body reaches maximum height its velocity become zero.
Substituting value in equation.
When body starts moving from highest point to surface of earth, it velocity at highest point is zero and final velocity is maximum.
Substituting the value, in equation of velocity.
Comparing (1) and (2).
The velocity of firing equal to velocity of landing.
Conclusion:
Thus, the velocity of firing equal to velocity of landing.
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