Adaredevil jumps a canyon 10.9 m wide. to do so, he drives a car up a 24° incline. (the daredevil lands on the other side of the canyon at the same elevation as takeoff.) (a) what minimum speed must he achieve to clear the canyon?

Minimum speed required =  12 m/s

Explanation:

Let the speed be y, and  upward direction be positive

Consider the vertical motion of car:-

    Initial velocity, u = ysin24

    Acceleration, a = -9.81 m/s²

    We need to find time when displacement is zero, ( s = 0m )

    Substituting in s = ut + 0.5at²

                      0 = ysin24 x t + 0.5 x -9.81 x t²

                      4.905t² - ysin24 x t = 0

                       t (4.905t - ysin24 ) = 0

                        t = 0 or

  Here time = 0 is not considered,

          So t = 0.083 y

Consider the vertical motion of car:-

    Initial velocity, u = ycos24

    Acceleration, a = 0 m/s²

    Time, t = 0.083y

    We need to find speed when displacement is 10.9 m, ( s = 10.9 m )

    Substituting in s = ut + 0.5at²      

                            10.9 = ycos24 x  0.083y + 0.5 x 0 x (0.083y)²

                            0.076y² = 10.9

                                      y = 11.99 = 12 m/s

   Minimum speed required =  12 m/s

u can delete ur account.

1. go on google and write

2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

hope this u

and ur welcm

: )

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.