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Q.27 The distance between two stations is 240 km. A train takes 4 hours to cover this distance. Calculate
the speed of the train.
Q.38 a) Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle
has a speed of 2 m/s, calculate the distance between her house and the school.
Q.40 Describe the various ways by which seeds are dispersed.
Q.41 State the main difference between asexual and sexual reproduction.
What is transpiration?
Name the part that transports water and minerals in plants.
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Explanation:
27)distance=240 km
time=4hours
speed =distance/time
speed= 240/4
=60km/h
38)time=15 minutes
1 minute =60 sec
15 min=60(15)=900 s
speed =2m/s
speed=distance/time
distance=speed(time)
=2(900)
=1800 m
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