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Physics_grade10_classical law of addition of speeds and displacements_FA.docx
Formative assessment
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Subject: Physics |
Grade: 10 ___ |
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Name: |
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Formative work. Determine the elastic and plastic deformation characteristics of metals. |
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Learning objectives: Provide examples of the classical law of addition of speeds and movements from everyday life. |
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Skills |
Learners achieve this learning objective, if |
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Knowledge Application
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they are able to solve the mechanics problems given to them. |
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1. In 4 hours, the motorboat travels a distance of 48 km against the current, in what time it will go back, if the current speed is 3 km / h.
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2. A person standing on an escalator rises in 2 minutes, and a person who runs on an escalator in 40 seconds. For how long will this person rise on a fixed escalator?
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3. Motor boat for 1.5 hours delivers mail from the city to the village located downstream. How long does the return trip take if the speed of the boat relative to water is four times the speed of the current?
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