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Tresset [83]
3 years ago
15

A cart starts from rest and accelerates uniformly at 4.0 m/s2 for 5.0 s. It next maintains the velocity it has reached for 10 s.

Then it slows down at a steady rate of 2.0 m/s2 for 4.0 s. What is the final speed of the car?
Physics
1 answer:
wlad13 [49]3 years ago
5 0

Answer:

12m/s

Explanation:

v_f=v_o+at

Let's call the velocity that the car maintains for 10 seconds v_f_1, and the final velocity v_f_2.

v_f_1=0+(4)(5)=20m/s \\\\v_f_2=20+(-2)(4)=12m/s

Hope this helps!

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