1
Question
A car starting from rest has a uniform acceleration of 5 m/s2.
What is the magnitude of average velocity of the car during the first four seconds?
A car starting from rest has a uniform acceleration of 5 m/s2.
What is the magnitude of average velocity of the car during the first four seconds?
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Solution
Given that:
u=0
a=5 m/s2
t=4sec
Final velocity,v=u+at=0+5 x 4=20m/s
Then the magnitude of average velocity of the car during the first four seconds,
=(Initial velcity +Final velocity) /2
=(0+20) /2=10m/s
u=0
a=5 m/s2
t=4sec
Final velocity,v=u+at=0+5 x 4=20m/s
Then the magnitude of average velocity of the car during the first four seconds,
=(Initial velcity +Final velocity) /2
=(0+20) /2=10m/s
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Two cars start from rest and accelerate uniformly. Car A attains a velocity of 10 m/s in 4 s. Car B attains a velocity of 10 m/s in 5 s. The average velocity of car A in the first 4 s is Join BYJU'S Learning Program
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