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CBSE Class 9 Answered

A car is moving with a velocity of 7m per second it's velocity decreasing at the rate of 2.5 metre per second s square. What
Asked by dishasarma2016 | 04 Jul, 2020, 09:15: AM
Expert Answer
Assuming that we have to calculate the time required for the car to come at rest.
v equals u plus a t
0 equals 7 minus 2.5 t
t equals 7 divided by 2.5
t equals 2.8 m s to the power of negative 2 end exponent
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