Physical Science Final Exam B
Quiz by Theresa Williams
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50 questions
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- Q1If a boat travels 45 kilometers in 3 hours, what is its speed in kilometers per hour?30 kilometers per hour10 kilometers per hour20 kilometers per hour15 kilometers per hour30s
- Q2What is the acceleration of an object moving with a constant velocity?10 m/s^25 m/s^29.8 m/s^20 m/s^230s
- Q3If a car increases its velocity from 0 to 20 m/s in 5 seconds, what is its acceleration?30s
- Q4What does Newton’s second law of motion state about the relationship between force, mass, and acceleration?Force equals mass divided by accelerationForce equals acceleration minus massForce equals mass squared times accelerationForce equals mass times acceleration30s
- Q5An object of mass 5 kg is subjected to a constant force of 20 N. What is the resulting acceleration of the object?2 m/s²6 m/s²4 m/s²10 m/s²30s
- Q6How does Newton's third law of motion apply to a person walking on the ground?As a person walks, they exert a force forward on the ground, and the ground exerts a force in the same direction on the person.As a person walks, they experience no forces due to Newton's third law.As a person walks, they exert a force backward on the ground, and the ground exerts an equal and opposite force forward on the person.As a person walks, they exert a force downward on the ground, which causes them to move forward.30s
- Q7How does the number of supporting ropes in a pulley system affect its mechanical advantage?Increasing the number of supporting ropes in a pulley system increases the mechanical advantage.Decreasing the number of supporting ropes in a pulley system increases the mechanical advantage.Increasing the number of supporting ropes in a pulley system decreases the mechanical advantage.The number of supporting ropes has no effect on the mechanical advantage of a pulley system.30s
- Q8What is mechanical advantage?The ratio of the output force produced by a machine to the input force applied to itThe distance a machine can move an objectThe speed at which a machine operatesThe weight of a machine30s
- Q9What type of simple machine is a wheelbarrow considered to be?wheel and axleinclined planepulleywedge30s
- Q10What type of simple machine is a ramp typically classified as?screwinclined planeleverpulley30s
- Q11What is the process by which thermal energy is transferred through direct contact between particles of a substance?ConvectionRadiationEvaporationConduction30s
- Q12What is the unit of measurement for thermal energy?AmpsWattsVoltsJoules30s
- Q13What type of energy transformation occurs when a light bulb is turned on?Chemical energy to light and heat energyMechanical energy to electrical energyElectrical energy to light and heat energyNuclear energy to sound energy30s
- Q14During photosynthesis, what type of energy transformation occurs?Electrical energy to sound energyHeat energy to mechanical energyLight energy to chemical energyKinetic energy to potential energy30s
- Q15Which of the following is an example of potential kinetic energy?A stretched rubber bandA moving carA spinning topA falling rock30s