Top Posters
Since Sunday
29
9
C
7
C
6
6
o
5
R
5
m
5
m
5
m
5
c
5
c
5
New Topic  
cloveb cloveb
wrote...
Valued Member
Posts: 753
4 years ago
Two autos are initially 150 m apart (at t=0) and are heading toward each other. The autos maintain constant speed and one auto's speed is twice that of the other. The autos collide at t=3s. What is the speed of the faster auto (in m/s)?

(1) 33 (2) 38 (3) 42 (4) 82 (5) 96

PHY 2053 Exam
Read 213 times
1 Reply
Replies
Answer verified by a subject expert
bolbolbolbol
wrote...
Staff Member
Top Poster
Posts: 2661
3 months ago
Sign in or Sign up in seconds to unlock everything for free
Ans: 1

V1 = X m/s, V2 = 2X  m/s.

d1 + d2 = 150 m.

3x + 3(2x) = 150
3x + 6x =150
9x = 150
x= 150/9
x= 16.7 m/s

V2= 2*16.7m/s = 33.3m/s Speed of the faster car
1

Related Topics

wrote...
Posts: 753
Credits: 7393

4 years ago
Thanks
wrote...
Posts: 78
Credits: 40

Yesterday
Helped a lot
wrote...
Posts: 141
Credits: 175

2 hours ago
This site is awesome
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  107 People Browsing
 162 Signed Up Today
Related Images
 367
 169
 75
Your Opinion