Saturday

November 22, 2014

November 22, 2014

Posted by **Haley** on Wednesday, September 12, 2007 at 4:36pm.

4.88m/s^2. She decides to test the car by dragging with another speedster, McSpeedy. Both start from rest, but experienced McSpeedy leaves 1.0s before Sue. If McSpeedy moves with a constant acceleration of 3.66m/s^2 & Sue maintains an acceleration of

4.88m/s^2, find the distance she travels before catching him.

So far I have displacement of Sue is 2.44deltat^2

McSpeedy's v2 before Sue starts: 3.66m/s

McSpeedy's displacement: 1.83delta t^2

I am missing parts and can't figure out what

Any ideas?

- Grade 12 Physics -
**bobpursley**, Wednesday, September 12, 2007 at 5:09pmHer distance is 1/2 4.88 *t^2

His distance is 1/2 3.66 (t+1)^2

set them equal, and solve for t.

- Grade 12 Physics -
**Haley**, Wednesday, September 12, 2007 at 5:45pmmhm ok so is this what the equation should look like (before I use quadratic equation)?

4.88/2= 2.44

2.44(t+1)^2

= 2.44 (t^2-2t-1)

d=2.44t^2-4.88t+2.44

(3.66/2=1.83)

1.83t^2=2.44t^2-4.88t+2.44

0=0.61t^2-4.88+2.44

I am not even sure how I did the top one before placing it into the 1.83 equation, I am really confused (before, I had t-1 instead, and somehow worked out the above equation and then placed that into the 1.83, but now I realize I need to have

t+1, so that makes things a little more difficult)

**Answer this Question**

**Related Questions**

Physics - A young woman named Kathy Kool buys a sports car that can accelerate ...

Physics - A young woman named Kathy Kool buys a sports car that can accelerate ...

Physics - A young woman named Kathy Kool buys a sports car that can accelerate ...

Physics - A young woman named Kathy Kool buys a sports car that can accelerate ...

physics - A young woman named Kathy Kool buys a sports car that can accelerate ...

physics - Kathy Kool buys a sports car that can accelerate at the rate of 5.00 m...

Physics - A car (mass = 1080 kg) is traveling at 25.4 m/s when it collides head-...

physics - A car (mass = 1100 kg) is traveling at 33.0 m/s when it collides head-...

Physics - A car (mass = 1070 kg) is traveling at 40 m/s when it collides head-on...

Physics - A car (mass = 1180 kg) is traveling at 36 m/s when it collides head-on...