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Kinematics in Two

Dimension- Kinematika dalam Dua Dimensi -

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Projectile MotionGerak Peluru

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Projectile MotionGerak Peluru

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Projectile MotionGerak Peluru

A projectile motion is a parabolic through which the

velocity of any object has its vertical and horizontal

components

Horizontal componentVx0 = V0 cos

Vx = Vx0

Constant Velocityx = x0 + Vx0 t

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Projectile MotionGerak Peluru

A projectile motion is a parabolic through which the

velocity of any object has both vertical and horizontal

components

Vertical componentVy0 = V0 sin Vy = Vy0 - gt

Constant Accelerationy = y0 + Vy0 t gt2

+

Vy2= Vy0

2 2g ( y y0 ) +

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Projectile MotionGerak Peluru

A movie stunt driver on a motor cycle speeds

horizontally of a 50-m-high cliff. How fast must the

motorcycle leave the cliff off to land on level groundbelow 90.0 m from the base of the cliff where the

cameras are? Ignore the air resistance

Seorang stunt man mengendarai motor saat untuk pengambilan gambar film dari

tebing setinggi 50 m dari tanah. Berapakah kecepatan motor agar bisa mendaratpada jarak 90 meter dari titik tinggal landas tebing? Hambatan udara ditiadakan.

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Projectile MotionGerak Peluru

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Projectile MotionGerak Peluru

A football is kicked at an angle of 37o with a velocity of 20 m/s.Calculate a) Maximum height, b) the time of travel before the

football hits the ground, c) how far away it hits the ground, d)

the velocity vector at the maximum height and e) the

acceleration vector at the maximum height. Assume the ballleaves the foot at ground level, and ignore air resistance and

rotation of the ball.

Sebuah bola ditendang mengarah sudut 37o dengan kecepatan 20 m/s. Hitung a)

tinggi maximum bola di udara, b) waktu total saat bola berada di udara dan sesaatsebelum mendarat, c) jarak bola mendarat dari titik tendang, d) Vektor kecepatan saat

bola berada di titik tertinggi, dan e) vektor percepatan saat bola berada di titik

tertinggi.

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Projectile MotionGerak Peluru

Horizontal Range ( R )

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Uniform Circular MotionGerak Melingkar Beraturan

= angular speed

V = absolute velocity

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Uniform Circular MotionGerak Melingkar Beraturan

Average angular speed ()

The rate at which its angular coordinate, the angular

displacement , changes with time

av =f- i

trad/s

= 2f

= Angular speed = Angular frequency

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Uniform Circular MotionGerak Melingkar Beraturan

Angular acceleration ()

The rate at which its angular speed changes with time

=f- i

trad/s2

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Uniform Circular MotionGerak Melingkar Beraturan