What is the mechanical energy
The acceleration of gravity is 9.8 m/s2 .
If the speed of the child at the lowest position is 2.21972 m/s, what is the mechanical energy dissipated by the various resistive forces (e.g. friction, etc.)?
Answer in units of J
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A ranger in a national park is driving at 46 km/h when a deer jumps onto the road 64 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce a deceleration of 3.4 m/s2. What is the maximum reaction time allow
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