- #1

- 188

- 0

A truck covers 40.0 m in 8.25 s while smoothly slowing down to final speed of 2.05 m/s.

(a) Find the truck's original speed.

m/s

(b) Find its acceleration.

m/s2

I was told to use this V^2 = Vo^2 + 2AdeltaX but became lost.

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter BunDa4Th
- Start date

- #1

- 188

- 0

A truck covers 40.0 m in 8.25 s while smoothly slowing down to final speed of 2.05 m/s.

(a) Find the truck's original speed.

m/s

(b) Find its acceleration.

m/s2

I was told to use this V^2 = Vo^2 + 2AdeltaX but became lost.

- #2

- 188

- 0

a. 7.65m/s and b. -.70

A jet plane lands with a speed of 117 m/s and can accelerate at a maximum rate of -5.80 m/s2 as it comes to rest.

(a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest?

s

(b) Can this plane land on a small tropical island airport where the runway is 0.800 km long?

yes

no

What is the actual minimum distance needed to stop the plane?

km

Can anyone help me with that?

- #3

- 35

- 0

b) after solving part a, you'll have the time, use that along with velocities (initial and final) in another common kinematics equation, and solve for distance. Then you'll know if .8km is long enough AND you'll have the answer for the 2nd part of b.

- #4

- 188

- 0

Thanks for the help and I was able to solve this.

Share: