Question

While driving on I-75 North at a velocity of 20.0 m/s north, you decide to pass a large truck.
If your car can accelerate 5.00 m/s, how long will it take your car to reach 30.0 m/s north?

Answer 1

It will take 2 seconds to reach 30 m/s north.

Below are the parameter given from the question :

Initial velocity U = 20 m/s

Final velocity V = 30 m/s

Acceleration a = 5 m/s

Time t = ?

The equation of linear motion to use is:

V = U + at

Substitute all the parameter to the equation above.

30 = 20 + 5t

Collect the like term

5t = 30 - 20

5t = 10

t = 10/5

t = 2 s

Therefore, It will take 2 seconds to reach 30 m/s north.

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