25their connection with space and time properties

Starter

A tennis ball is moving towards a racket with a velocity of 20 m/s and after being hit moves away from the racket with a velocity of 35 m/s. If the mass of the tennis ball is 0.25 kg, and the time of the collision is 0.1 s, what force is exerted on the tennis ball?

137.5 N

Laws of conservation of momentum and mechanical energy, their connection with space and time properties

Today’s Theme

Learning Objectives

To apply conservation laws when solving calculations and experimental problems

Success Criteria

Students have achieved the objective if they can…
Verbally and algebraically express the principle of conservation of momentum
Explain the main differences between elastic and inelastic collisions
Solve problems involving both elastic and inelastic collisions

Vocabulary

Conservation; inelastic collision, perfectly inelastic collision, elastic collision

Experimental work

The class is spliced into small group to perform the experimental work

Experimental work

The discussion of the results obtained by different groups is being held

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