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Cloud [144]
3 years ago
9

An ant moves towards the plane mirror with speed of 2 m/s & the mirror is moved towards the ant with the same speed. What is

the relative velocity between the ant and its image?​
Physics
1 answer:
Stells [14]3 years ago
6 0
  • Speed of ant-V_a=2m/s
  • Speed of mirror =v_b=2m/s

We know

\boxed{\sf Relative\:velocity(V_{AB})=V_A-V_B}

\\ \sf\longmapsto V_{AB}=2-2

\\ \sf\longmapsto V_{AB}=0m/s

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a 5.0 kg ball is dropped from a 2.5 m high window. what is the velocity of the ball just before it hits the ground?
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Assume the air resistance on the ball is negligible. Because of gravity, the ball should accelerate downwards at a constant g = 9.81 \; \rm m \cdot s^{-2} near the surface of the earth.

For an object that is accelerating constantly,

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  • a is its acceleration, and
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In this case, x is the same as the change in the ball's height: x = 2.5\; \rm m. By assumption, this ball was dropped with no initial velocity. As a result, u = 0. Since the ball is accelerating due to gravity, a = 9.81\; \rm m \cdot s^{-2}.

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3 years ago
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