[Einstein Uae]

بسم الله الرحمن الرحيم

السلام عليكم ورحمة الله وبركاته

Question 1


First you have to find the acceleration

a = (vf² - vi²) / 2d

Where ,

vf² is the final velocity which is ZERO
vi² is the drifting speed

Now you get this equation

a = -vi²/2d

Second determine the force

F = m*a

m is the mass which = W * g , where W is the weight & g is the gravity acceleration which is 9.8 m/s²
a is the acceleration found in the first step

Just plug in the values and it is done.

you will have finally an equation like this

F = -(W/g) (vi²/2d)