Physics Quiz

A car travels at a constant speed of 60 miles per hour. How far does it travel in 2.5 hours?

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A student throws a ball vertically upward with an initial velocity of 20 m/s. How long does it take for the ball to reach its maximum height?

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A box weighing 50 N is pulled across a horizontal surface with a force of 30 N. What is the net force acting on the box?

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A ball is dropped from the top of a building that is 100 meters tall. How long does it take for the ball to reach the ground? (Neglect air resistance)

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A skier starts from rest and slides down a frictionless hill with an incline of 30 deg

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What is the acceleration of an object in freefall at its highest point?

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A force of 50 N is applied to lift a box vertically upward by 2 meters. How much work is done against gravity?

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An object is thrown vertically upward with an initial velocity of 30 m/s. What is its velocity after 4 seconds?

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Random errors are characterized by:

• Consistency in their occurrence

• Systematic patterns

• Lack of consistent pattern

• None of the above

What concept is used to estimate errors associated with single measurements?

• Random errors

• Systematic errors

• Least count

• Variance