A child of mass 20 kg climbs a slight ( of height 2.0 metre from the ground) and slide down from top. What is her speed when she reaches the ground ? Neglect friction.
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A child of mass 20 kg climbs a slight ( of height 2.0 metre from the ground) and slide down from top. What is her speed when she reaches the ground ? Neglect friction.
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height-2m
Use worrk energy therom eq
20 × 10 ×2 = 1/2 × 20 × v^2
40 = v^2
v. =√40
v = 2√10 m/s.