# Physics Reviewer : Vectors, Kinematics, Forces & Laws of Motion

Jun 17th, 2015
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A. Vectors> Scalar Quantity - a quantity which has only magnitude but no direction Ex. Speed – 40 kph Vector Quantity - a quantity which has both magnitude and direction Ex. Velocity- 40 kph due north. Analytical Methods of Finding the Resultant A. Triangle Method – construct a triangle using the 2 given vectors and use concepts of trigonometry

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1. The law of acceleration is also known as __________.A. DAlemberts principleB. Newtons first lawC. Newtons second lawD. Newton;s third law2. Newtons first law of motion is also known as the law of _________.A. ReactionB. Impulse and momentumC. AccelerationD. Motion3. Which of the following forces is an example of non-conservative force based on the law of conservation of mechanical energy?A. Compressive forceB. Gravitational forceC. Elastic forceD. Frictional force4. Waves that travel through some material medium as it displaced from an equilibrium state is?A. Mechanical waveB. Longitudinal waveC. Periodic waveD. Elastic wave5. The electrons emitted from a hot filament are accelerated in an electric field until their velocity is 5 x 10 to the 9th power cm/sec. Find the wavelength of the electrons.A. 0.660B. 0.009C. 0.146D. 0.1536. A steel wire 2 meters long has a mass of 20 grams and stretched with a tension of 1000 Newtons. What is the velocity of propagation of a transverse wave in the wire?A. 316 m/secB. 300 m/secC. 422 m/secD. 329 m/sec7. One end of a horizontal spring is attached to a prong of electrically driven tunin

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