A water park rider (mass = 30.0 kg) starts from rest at the top of a 38.0 m tall water slide (A). The height at B is 18.0 m. Assuming mechanical energy
conservation, determine the potential energy (PE) and kinetic energy (KE) values
at locations A, B and C. Use g = 9.8 N/kg.
Tap on an energy box to enter or edit its value.
PEA =
J
J
KEA=
A
PEB =
KEB=
B
PEc =
J
с
KEc =
J

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.