Rugby Player Problem: Solve for Time to Tackle

  • Thread starter Thread starter badsniper
  • Start date Start date
AI Thread Summary
Two rugby players are 37 meters apart, with one accelerating from rest at 0.5 m/s² and the other moving at a constant speed of 3.1 m/s. The problem requires determining the time until they tackle each other. To solve it, one must write equations for the distance covered by each player as a function of time and then calculate the separation distance. There is confusion regarding the use of "function of time," with some preferring linear kinematics equations instead. The discussion highlights the need for clearer explanations of the mathematical approach to solve the problem.
badsniper
Messages
3
Reaction score
0

Homework Statement


two rugby players are running toward each other. They are 37 m apart. if one accelerates from rest at 0.5m/s2 and the other was already moving at 3.1 m/s and maintains his speed,

a) How long before they tackle each other?


This question is annoying me so much right now, I found 2 archived solutions to the problem, but they don't explain in enough detail, so I'm just re-posting it so that I may know how to solve it.
 
Physics news on Phys.org
badsniper said:

Homework Statement


two rugby players are running toward each other. They are 37 m apart. if one accelerates from rest at 0.5m/s2 and the other was already moving at 3.1 m/s and maintains his speed,

a) How long before they tackle each other?This question is annoying me so much right now, I found 2 archived solutions to the problem, but they don't explain in enough detail, so I'm just re-posting it so that I may know how to solve it.
Write out the equation for distance covered by each runner as a function of time. Then write out the equation for separation as a function of those distances ie: s = 37 - (d1(t) + d2(t)). What is the value of s when they collide? Work out t from that.

AM
 
Andrew Mason said:
Write out the equation for distance covered by each runner as a function of time. Then write out the equation for separation as a function of those distances ie: s = 37 - (d1(t) + d2(t)). What is the value of s when they collide? Work out t from that.

AM

Sorry, but I don't understand what you mean by "Function of time", or function of distances, I was attempting to solve it using the linear kinematics equations.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Two football players run at each other
Replies
1
Views
8K
Rugby Player Collision Question-
Replies
2
Views
3K
Solving Kinematics Problem: Rugby Players 37m Apart
Replies
8
Views
4K
Kinematic motion problem. (acceleration, displacement, velocity)
Replies
17
Views
8K
How Do You Solve Kinematics Problems Involving Movement and Acceleration?
Replies
8
Views
6K
When will two football players collide?
Replies
3
Views
5K
When will the football players collide?
Replies
8
Views
6K
Kinematics Football Problem -- 2 football players colliding....
Replies
25
Views
6K
Newton's law problem: Pushing 2 stacked blocks on a horizontal table
Replies
13
Views
3K
Calculating Impact Time in Two Rugby Players Collision
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top