A 20-kg boy slides down a playground slide with a constant acceleration a = 1.1 m/s2 parallel to the surface of the slide. The boy starts sliding with an initial speed of v0=0. Refer to the figure. a) write an expression for the child's speed squared, vf2, at the bottom of the slide in terms of a, v0, and the length of the slide, d. b If the slide is 4.0 m long and the boy's final speed is vf=f = 5.0 m/s, what is his initial speed, in meters per second? c) When starting from rest, how long, in seconds, does it take the boy to reach the bottom of the slide?
A 20-kg boy slides down a playground slide with a constant acceleration a = 1.1 m/s2 parallel to the surface of the slide. The boy starts sliding with an initial speed of v0=0. Refer to the figure. a) write an expression for the child's speed squared, vf2, at the bottom of the slide in terms of a, v0, and the length of the slide, d. b If the slide is 4.0 m long and the boy's final speed is vf=f = 5.0 m/s, what is his initial speed, in meters per second? c) When starting from rest, how long, in seconds, does it take the boy to reach the bottom of the slide?
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A 20-kg boy slides down a playground slide with a constant acceleration a = 1.1 m/s2 parallel to the surface of the slide. The boy starts sliding with an initial speed of v0=0. Refer to the figure.
a) write an expression for the child's speed squared, vf2, at the bottom of the slide in terms of a, v0, and the length of the slide, d.
b If the slide is 4.0 m long and the boy's final speed is vf=f = 5.0 m/s, what is his initial speed, in meters per second?
c) When starting from rest, how long, in seconds, does it take the boy to reach the bottom of the slide?
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