Question

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Answer 1

Answer:

1. average speed is the total distance upon total time and instantaneous speed means the speed of an object at a particular time

2. it is 0 m/s

3.(a) total distance =100+50=150m

and total time = 10 + 30=40s

average speed is 150/40=3.75m/s

(b) displacement = 100-50=50m

total time = 40s

average velocity = 50/40=1.25m/s

4. 18 km/h= 5 m/s

36km/h= 10 m/s

(a) [10-5]/5=1 m/s^2

(b) s=ut + 1/2at^2

so, s=5×5 + 1/2.1.(5)^2

=25+12.5

=37.5m

Explanation:

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Answer 2

Answer:

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