PS3.A.1 Energy
Quiz by Adrienne Raspberry
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9 questions
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- Q1The brakes on a car do 280,000 J of work in stopping the car. If the car travels a distance of 70 m while the brakes are being applied, how large is the force that the brakes exert on the car? W=Fd3500 J4000 J.025 J500 J30s
- Q2Calculate the kinetic energy of a 678 kg cheetah running after an antelope at 9 m/s.27,459 J6,102 J21,102 J3,051 J30s
- Q3A jogger is moving with a mass of 37 kg at a speed of 4 m/s. What is the jogger's kinetic energy?9.25 J2.35 J296 J592 J30s
- Q4What happens to the energy of the ball as it rolls from point D to point EThe ball is losing potential energy and gaining kinetic energy.The ball has more potential energy than kinetic energy.The ball has total kinetic energy.The ball is losing kinetic energy and gaining potential energy.30s
- Q5At what position does the ball have the greatest kinetic energy?DCBE30s
- Q6A 7 kg history book is placed on a 1.95 m high table. How large is the gravitational potential energy of the book relative to the floor?210.22 J133.77 J13.65 J3.59 J30s
- Q7The input work on a pulley system is 70 J. If the output work is 39 J, what is the efficiency of the pulley system? e=Work (out)/Work (in)56%1.79%57%53%30s
- Q8Energy cannot be created or destroyed it only _________________transfers into other types of energy.gets completely wasted in the transfer to another type of energy.becomes electrical energy.becomes a mixture of energy and motion.30s
- Q9The stored energy due to the chemical bonds between atoms is ____ energy.chemicalgravitationalelectricallight30s