UJIAN TENGAH SEMESTER MAHASISWA PGSD REGULER FKIP UB ANGKATAN TAHUN 2009/2010 KELAS A DAN B

UTS MAHASISWA PGSD REGULER ANGKATAN TAHUN 2009/2010
FKIP UNIVERSITAS BORNEO TARAKAN
KELAS : A DAN B

1.A ball is dropped from rest from a height 6.0 meters above the ground. The ball falls freely and reaches the ground 1.1 seconds later. What is the average speed of the ball?
2.How much time will it take for a person to walk the length of a football field (100 yards) at a constant speed of 5ft/s?
3.A 10-newton force and a 15-newton force are acting from a single point in opposite directions. What additional force must be added to produce equilibrium?
4.A 2.0-kilogram mass is moving with a speed of 3.0 m/s. What is the kinetic energy of the mass?
5.A 50-kilogram firefighter is on a ladder 10 meters above the ground. When the firefighter descends to 5 meters above the ground, the firefighter’s gravitational potential energy will decrease by
6.A hydraulic lift used at an automotive repair shop raises a 1000-kilogram car two meters off of the ground. What is the potential energy given to the car?

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