Kinematics question on a motorcycle

Click For Summary

Homework Help Overview

The problem involves a motorcycle stunt rider attempting to leap across a river using a ramp. The ramp is 100 meters long and 20 meters high at its peak, with the river being 30 meters wide. The rider accelerates from rest and takes off with a speed of 20 m/s, moving parallel to the ramp's face. The questions focus on determining the maximum height reached, the time of flight, the horizontal distance traveled, and the landing velocity components.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants discuss breaking down the initial velocity into components and applying kinematic equations for both vertical and horizontal motions. There are attempts to calculate the maximum height and time of flight, with some questioning the assumptions made regarding the height above the river and the initial velocity components.

Discussion Status

There is ongoing exploration of the problem, with participants providing hints and corrections regarding the calculations and the interpretation of the ramp's angle. Some participants express confusion about the correct application of kinematic equations and the significance of the initial height of the ramp.

Contextual Notes

Participants note the need to clarify the total height above the river and the implications of the ramp's height on the calculations. There is also mention of the importance of correctly identifying the signs in the equations related to vertical motion.

  • #61
imy786 said:
ow...i was calculating using vectors...
a2+b2= c2...

hage- iv done a leve maths and physics ...so i aint a total beginer...

sqaure root of (19.6^2 + 16^2) = 25m/s is the total velocity at -39.2 degrees
with respect to the horizontal

Well when I say use Pythagorus and you don't, what else am I to assume!? :smile:

That answer looks reasonable to me.
 
Physics news on Phys.org
  • #62
you have been so helpful...
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 3 ·
Replies
3
Views
7K
Replies
2
Views
5K
Replies
3
Views
3K
  • · Replies 2 ·
Replies
2
Views
7K
  • · Replies 3 ·
Replies
3
Views
5K
Replies
3
Views
4K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 7 ·
Replies
7
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K