Motion lesson 9
OUTCOME
By the end of the lesson you will be able to use conservation of energy and elastic collisions to investigate collisions.
Engage
In a collision, if the kinetic energy is conserved it is defined as an elastic collision
LEARNING TASKS
Explain
What makes a collision inelastic?
Where does the energy go?
Explore and Elaborate
Apply this concept to the following problem:
A car (mass = 1.5T) travelling at 32 km/h hits a parked truck (2.3 T) and they both skid across the road at 1.5 m/s before coming to rest.
Show this is an inelastic collision
If conservation of energy holds, where is the rest of the energy?
Evaluate
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