Gina wheels her wheelchair up a ramp using a force of 80 Newtons . If the ramp has a mechanical advantage of 7 what is the outpu
2 answers:
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Answer:
Explanation:
We can see from the question that
and
% of
=>
from the question % of
Substituting this into the equation
=>
From the equation above
Answer:
Explanation:
Speed experimented by the ball before and after collision are determined by using Principle of Energy Conservation:
Before collision:
After collision:
The magnitude of the impulse delivered to the ball by the floor is calculated by the Impulse Theorem: