Grade 7Mechanics

A car moving with a velocity of 10m\s and with a uniform acceleration gains a velocity of 30 m\s after travelling a distance of 4km. The time taken is

Revati

7 Years agoGrade 7

1 Answer

Arun

7 Years ago

Dear student

when an object travels in a straight line-

speed= velocity

avg speed=avg velocity
avg velocity = u+v/2
10+30/2
=20m/s
v=s/t
v=20m/s
s=4km(4000m)
t=v/s
=1/200

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A car moving with a velocity of 10m\s and with a uniform acceleration gains a velocity of 30 m\s after travelling a distance of 4km. The time taken is

Revati

1 Answer

Arun

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