The initial velocity of a car is 20 m/ s.It undergoes an acceleration of 2m/s.squre. Find the speed after 10 second.
Answers
Answer:
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Answer:
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Step-by-step explanation:
If the velocity of a particle moving in a straight line changes uniformly (at a constant rate of change) from 5 m/s to 2 m/s over one second, its constant acceleration is −3 m/s2.
If a particle has an initial velocity of 6 m/s and a constant acceleration of −2 m/s2, then:
when t=1, the velocity of the particle is 4 m/s
when t=2, the velocity of the particle is 2 m/s
when t=3, the velocity of the particle is 0 m/s
when t=4, the velocity of the particle is −2 m/s
when t=10, the velocity of the particle is −14 m/s.
In general, the velocity of the particle is 6−2t m/s after t seconds. The velocity–time graph for this motion is shown below; it is the graph of v(t)=6−2t.
Over the first three seconds, the particle's speed is decreasing (the particle is slowing down). At three seconds, the particle is momentarily at rest. After three seconds, the velocity is still decreasing, but the speed is increasing (the particle is going faster and faster).