A playground slide has a height of 4.5m amd is frictionless. A 30kg child pushes off from the top of the slide so that they have a S.5 m/s at the top of the slide. Speed of a) What's the child's speed at the bottom of the slide? b) After the bottom of the slide, child skids along a rough patch of ground that has a coefficient of friction M= If the rough patch is 2.2 m long, how much work is done by the friction on' the child when they reach the end of the vough patoh? c) Imagine the playgronnd had a spring (K= 755 N/m) at the end of the patch. If the child were to collide, how muuh wonld they compress before returming to rest? 2.5

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A playground slide has a height of 4.5m amd is frictionless. A 30 kg
child pushes off from the top of the slide so that they have a speed of
5.5 m/s at the fop of Hhe slide.
a) What's the child's speed at the bottom of the slide?
b) After the bottom of the slide, child skids along a rough patch
of ground
If the rough patch is 2.2 m
the friction an the child when they veach the end of the
rough patoh?
c) Imagine the playgronnd had a spring (K= 755 N/m) at the
end of the patch. If the child were to collide, how muuh wonla
they Compress before returning to rest?
that has a coefficient of friction Mk= 2.5
long, how mnch work is done by
Transcribed Image Text:A playground slide has a height of 4.5m amd is frictionless. A 30 kg child pushes off from the top of the slide so that they have a speed of 5.5 m/s at the fop of Hhe slide. a) What's the child's speed at the bottom of the slide? b) After the bottom of the slide, child skids along a rough patch of ground If the rough patch is 2.2 m the friction an the child when they veach the end of the rough patoh? c) Imagine the playgronnd had a spring (K= 755 N/m) at the end of the patch. If the child were to collide, how muuh wonla they Compress before returning to rest? that has a coefficient of friction Mk= 2.5 long, how mnch work is done by
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