A body which is uniformly retarded comes to rest in 10 seconds after travelling a distance of 20m. Calculate its initial velocity
The initial velocity can be found from the following kinematic equation (see https://www.khanacademy.org/science/physics/one-dimensional-motion/kinematic-formulas/a/what-are-the-kinematic-formulas):
where is the distance, is the final speed, is the initial speed, and is the time. Expressing , obtain:
Answer. 4m/s.
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