Pada suatu saat seorang pengendara sepeda berada 40,0 m tepat di sebelah timur dari tiang bendera sebuah taman, bergerak ke arah selatan dengan kelajuan 3 m/s. Lalu 30 s kemudian dia berada 40,0 m tepat di sebelah utara dari tiang bendera tersebut, bergerak ke arah timur dengan kelajuan 8 m/s. Untuk pengendara dalam waktu 30,0 s ini berapakah:

a) besar dan arah perpindahan
b) besar dan arah kecepatan rata-rata
c) besar dan arah percepatan rata-rata.

A( developed during the process of technology design

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?

Asatellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. if a geosynchronoussatellite is in an equatorial orbit, its position appearsstationary with respect to a ground station, and it is known as ageostationary satellite find the radius rof the orbit of a geosynchronous satellite that circles the earth.(note that ris measured from the center of the earth, not the surface.) you mayuse the following constants: the universal gravitational constant g is 6.67 \times 10^{-11}\; {\rm n \; m^2 / kg^2}. the mass of the earth is 5.98 \times 10^{24}\; {\rm kg}. the radius of the earth is 6.38 \times 10^{6}\; {\rm m}.