Complete the following sentences:
a) A body is thrown vertically upwards with a velocity of 1000 m/s. Its velocity when it
reaches the point of projection, during the fall will be _______.
b) The acceleration of the body that moves with a uniform velocity will be _______.
c) A train travels from station A to station B with a velocity of 100km/h and returns from
station B to station A with a velocity of 80km/h. Its average velocity during the whole
journey is _______ and its average speed is _______.
TNSCERT Class 9 General Science Ch 6 Motion
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a)1000 m/s
b)constant
c)Av.vel=disp./time=0/2=0
Av.speed=100+80/1+1=180/2=90 Km/hr
b)constant
c)Av.vel=disp./time=0/2=0
Av.speed=100+80/1+1=180/2=90 Km/hr
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