A truck starts from rest on a straight road and accelerates at 3 m/s 2 until it

Question

A truck starts from rest on a straight road and accelerates at 3 m/s2 until it reaches a speed of 25 m/s. Then it travels for 20.0 s at constant speed until the brakes applied, stopping the truck in a uniform manner in an additional 5.0 s. A) How long is the truck in motion?

B) What is the total displacement the truck travelled?

C) What is the average velocity of the truck during the motion described?
A truck starts from rest on a straight road and accelerates at 3 m/s2 until it reaches a speed of 25 m/s. Then it travels for 20.0 s at constant speed until the brakes applied, stopping the truck in a uniform manner in an additional 5.0 s. A) How long is the truck in motion?

B) What is the total displacement the truck travelled?

C) What is the average velocity of the truck during the motion described?
A truck starts from rest on a straight road and accelerates at 3 m/s2 until it reaches a speed of 25 m/s. Then it travels for 20.0 s at constant speed until the brakes applied, stopping the truck in a uniform manner in an additional 5.0 s. How long is the truck in motion? What is the total displacement the truck travelled? What is the average velocity of the truck during the motion described?

Explanation / Answer

a 25/3+20+5=33.3

b 104.1+500+62.5=666.66

c 666.66/33.33=20

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