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primary 6 | Science
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Sry but pls help by today I have Prelim tmr
Date Posted: 4 years ago
Views: 507
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2
Answer: 2
1 is false because the mass does affect the braking distance.
2 is true because , through the graph, we can infer that when the speed of the car is higher, the braking distance is higher.
3 is false. Kinetic energy is speed of an object. When the kinetic energy is lower, the braking distance is lesser.
4 is false. The braking distance converts kinetic energy into heat and sound energy. It is not the potential energy that is converted.
Thus, the answer is 2.
1 is false because the mass does affect the braking distance.
2 is true because , through the graph, we can infer that when the speed of the car is higher, the braking distance is higher.
3 is false. Kinetic energy is speed of an object. When the kinetic energy is lower, the braking distance is lesser.
4 is false. The braking distance converts kinetic energy into heat and sound energy. It is not the potential energy that is converted.
Thus, the answer is 2.
done
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