An object initially at rest start to accelerate at a constant acceleration of 5 m/s2 at time t = 0 s. At time t = 3 s, the acceleration of the object reduces to 4 m/s2 and this continue until t = 10 s.
a. At time t = 2 s, what is the speed of the object?
b. At time t = 5 s, what is the speed of the object?

Question

An object initially at rest start to accelerate at a constant acceleration of 5 m/s2 at time t = 0 s. At time t = 3 s, the acceleration of the object reduces to 4 m/s2 and this continue until t = 10 s.
a.	At time t = 2 s, what is the speed of the object?
b.	At time t = 5 s, what is the speed of the object?

anonymous · Answer

object at time t=0  has zero velocity
at t=1 due to the 5 meters PER SECOND acceleration v = 5m/s
at t=2  v= 10m/s
at t=3 v=15m/s
at t = 4   v=19m/s
at t=5  v=23m/s

goformit100 · Answer

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anonymous · Answer

Thank you so much !