# Answer on Mechanics | Relativity Question for gamal

Question #15697

A car had a velocity of 4.0 m/s when it started to accelerate up a hill

5 sec later it is rolling down the hill at 6.0 m/s

what is the acceleration and displacement

5 sec later it is rolling down the hill at 6.0 m/s

what is the acceleration and displacement

Expert's answer

The acceleration of a car is

a = (6.0[m/s] - 4.0[m/s])/5[s] = 0.4[m/s²].

So, the displacement is

D = 4.0[m/s]*5[s] + 0.4[m/s²]*(5[s])²/2 = 25 meters.

a = (6.0[m/s] - 4.0[m/s])/5[s] = 0.4[m/s²].

So, the displacement is

D = 4.0[m/s]*5[s] + 0.4[m/s²]*(5[s])²/2 = 25 meters.

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