H> Graphing out Word problems ( Word eq. included)

  • Thread starter Thread starter Larrytsai
  • Start date Start date
  • Tags Tags
    Graphing
AI Thread Summary
To solve the problem of when John catches up to Mary, start by establishing the time variable, with Mary leaving at t=0 seconds. Mary's position can be graphed with a slope of 7 m/s, while John's position starts at t=35 seconds with a slope of 8 m/s. To graph John's movement, plot his position starting at 35 seconds on the time axis, where his position is initially 0. The intersection of the two lines on the graph will indicate the time and distance from home when John catches up to Mary. This approach effectively visualizes their respective distances over time.
Larrytsai
Messages
222
Reaction score
0
Mary left home at noon running at 7m/s towards school. Her brother John left 35 seconds later running at 8m/s. How much time passed and how far were they from the house when John caught up to Mary.

Can u please state your formula and how to graph it out. I used the x-y graph but when i get to 35seconds with mary its at 245 metres. My problem is how do i graph john on the graph. where do i start? at 0 or 35? please help and thnx alot
 
Physics news on Phys.org
Plot position (ordinate) vs time (abscissa).

Take time t=0 when Mary leaves the home (origin). What is the slope of her line?

John's position is 0 at t = 35 s. What is the slope of his line?
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »
Thread 'A bead-mass oscillatory system problem'

Thread 'A bead-mass oscillatory system problem'

I can't figure out how to find the velocity of the particle at 37 degrees. Basically the bead moves with velocity towards right let's call it v1. The particle moves with some velocity v2. In frame of the bead, the particle is performing circular motion. So v of particle wrt bead would be perpendicular to the string. But how would I find the velocity of particle in ground frame? I tried using vectors to figure it out and the angle is coming out to be extremely long. One equation is by work...
View full post »

Similar threads

When Will John Catch Up to Mary?
Replies
1
Views
2K
Kinematics: Find average speed from displacement-time graph.
Replies
10
Views
5K
Problem with drawing velocity vectors
Replies
5
Views
2K
Graphing a quantitatively accurate v vs. t
Replies
2
Views
6K
Applying Kinematic Equations: Calculus-Based Physics Homework Problems
Replies
9
Views
26K
I Alternating Harmonic Numbers are cool, spread the word!
Replies
4
Views
2K
Radioactive Decay and Linear Graphing
Replies
9
Views
6K
Help with a Physics/Calculus Problem - 40 yard dash
Replies
2
Views
3K
Mastering Catch Problems: How to Solve Tricky Physics Questions with Ease
Replies
8
Views
2K
Acceleration word problem help :/
Replies
4
Views
8K

Hot Threads

Recent Insights

Back
Top