a girl rides a sled down a frozen hill. she starts from rest at the top of the hill and reaches a speed of 16 m/s at the bottom

Question

3 years ago

14

of the hill. How tall is the hill?

1 answer:

Zolol [24] · Answer 1 · 2022-08-15T08:21:59+03:00

13.06m

Explanation:

Given parameters:

initial velocity u = 0

final velocity v = 16m/s

Unknown;

height of the hill = ?

Solution:

We are going to apply one of the laws of motion to solve this problem;

V² = U² + 2gH

where V is the final velocity

U is the initial velocity

g is the acceleration due to gravity = 9.8m/s²

H is the height

since initial velocity is zero;

V² = 2gH

To find the height;

H = $\frac{V^{2g} }{y}$

H = $\frac{16^{2} }{2 x 9.8}$ = 13.06m

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