- #1

Whatup202

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Member warned to post individual problemss in separate threads and to show a solution attempt.

## Homework Statement

The first-

A ball falls off an edge 1m high and lands 0.9m away. What is the velocity of the ball as it falls off the edge, and what is the velocity of the ball as it hits the ground?

The second-

A man is driving at a constant speed of 20m/s. He sees a deer 112m away and breaks to a stop on its position. His reaction time is 0.5s. What is the car's acceleration as the man brakes? How long does it take him to reach the position?

If you could answer any part of either problem I would very much appreciate it.

## Homework Equations

(Not all may be needed.)

Vf=Vi+(a)(t)

Xf=Xi+(Vi)(t)+(1/2)(a)(t^2)

Yf=Yi+(Vi)(t)+(1/2)(a)(t^2)

Vf^2=Vi^2+(2)(a)(Xf-Xi)

Vf^2=Vi^2+(2)(a)(Yf-Yi)

## The Attempt at a Solution

Answers to the first- 1.99m/s and -4.43m/s

Answers to the second- -1.79m/s^2 and 10.67s ( maybe 11.17s)

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