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## Homework Statement

Hi I seriously need help in any of these remaining kinematics problems...I need to understand how to solve them too...Any help will be greatly appreciated.

1.) A bird watcher meanders through the woods, walking 0.40 km due east, 0.70 km due south, and 2.20 km in a direction 45.0° north of west. The time required for this trip is 2.50 h. Determine the magnitude and direction (relative to due west) of the bird watcher's

(a) displacement and

km (magnitude)

° (direction north of west)

(b) average velocity.

km/h (magnitude)

° (direction north of west)

Use kilometers and hours for distance and time, respectively

8.) A car drives straight off the edge of a cliff that is 50 m high. The police at the scene of the accident note that the point of impact is 140 m from the base of the cliff. How fast was the car traveling when it went over the cliff?

______(m/s)

16.) A soccer player kicks the ball toward a goal that is 29.0 m in front of him. The ball leaves his foot at a speed of 18.5 m/s and an angle of 33.6° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The answer is not 18.5 m/s.)

________________m/s

## Homework Equations

x(t) = .5at2 + v0t + x0

x(t) = .5(v0+vf)t

vf^2= v^2+ 2ax

v= v0+ at

## The Attempt at a Solution

I seriously don't know how to do these remaining problems

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