Honors Physics (Spring 2014) Final Exam Review

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Presentation transcript:

Honors Physics (Spring 2014) Final Exam Review

Newton’s Laws Determine the applied force required to accelerate a 3.25-kg object rightward with a constant acceleration of 1.20-m/s2 if the force of friction opposing the motion is 18.2 N. (Neglect air resistance.)

Conservation of Momentum A 45.0-kg ice skater stands at rest on the ice. A friend tosses the skater a 5.0-kg ball. The skater and ball move backwards across the ice with a speed of 0.50 m/s. What was the speed of the ball before the skater caught it?

Impulse A force of 16 N exerted against a stationary rock with an impulse of 0.8 kg m/s causes the rock to fly off the ground with a speed of 4.0 m/s. What is the mass of the rock?

Work and Kinetic Energy 4.00 × 105 J of work are done on a 1110 kg car while it accelerates from 10.0 m/s to some final velocity. Find this final velocity.

Power A child pulls on a wagon with a force of 75 N. If the wagon moves a total of 42 m in 3 min, what is the average power generated by the child?

Power and Force An electric motor develops 65 kW of power as if lifts a loaded elevator 17.5 m in 35 s. How much force does the motor exert?

Spring Force A spring stretches by 12 cm when an object weighing 3.2 N is suspended from it. What is the spring constant of the spring?

Potential Energy of Spring How much potential energy is stored in a spring with a spring constant of 27 N/m if it is stretched by 16 cm?

Potential Energy of Spring A toy rocket-launcher contains a spring constant of 35 N/m. How far must the spring be compressed to store 1.5 J of energy?

Period of a Pendulum How long must a pendulum be to have a period of 2.3 s on the Moon, where g = 1.6 m/s2?

Wave Properties A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 40.0 vibrations in 30.0 s. Also, a given maximum travels 425 cm along a rope in 10.0 s. What is the wavelength?

Wave Properties A fisherman uses a sonic ranger to determine the depth of a lake. The sound waves travel at 1210 m/s through the water and require 0.020 seconds to travel to the lake's bottom and back to the boat. How deep is the lake?