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Find the energy dissipated by frictional forces when the car moves down from X to Y.

Find the energy dissipated by frictional forces when the car moves down from X to Y.

Find the energy dissipated by frictional forces when the car moves down from X to Y.

Answer: Option B Using conservation of energy (COE), the total energy of the car at X = total energy at Y. At X, the car only has...

Evan Toh

Jul 30, 20251 min read

Energy COE - Bullet in tree trunk, find the frictional force in stopping the bullet

Energy COE - Bullet in tree trunk, find the frictional force in stopping the bullet

Energy COE - Bullet in tree trunk, find the frictional force in stopping the bullet

Answer: Option C With first glance, we may think of using kinematics to solve. It can, but the process will be longer. Refer to the...

Evan Toh

Jul 6, 20251 min read

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