science
Grade6
Easy
Question
A car starts from rest and accelerates at a rate of 2 m/s2. Its speed after 6 seconds is ______ m/s.
Hint:
Acceleration is change in velocity by time.
The correct answer is: 12
As we know acceleration is defined as change in velocity with change in time. Here, car is starting from rest and moving with constant acceleration of 2 m/s².
It's speed after 6 seconds would be
acceleration = v/t
2 m/s² = v/6
v = 2 × 6 = 12 m/s.
The speed of car after 6 seconds would be 12 m/s.
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