science
Grade-9
Easy
Question
A vehicle moving at a speed of 12 m/s accelerates at a rate of 6 m/s2 for 7 seconds. The final velocity of the vehicle is _____.
Hint:
54 m/s
The correct answer is: 54
Given that,
The initial velocity, u = 12 m/s
The acceleration, a = 6 m/s2
Time taken, t = 7 s
On using the first equation of motion we get,
v = u + at
Or, v = 12 + 6 x 7
Or, v = 12 + 42
Or, v = 54 m/s
Therefore, the final velocity of the vehicle is 54 m/s.
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