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Why is an object that moves in a circular path accelerating when it has constant speed?

Think about the definition of acceleration - it is the rate of change of velocity . Your statement that the object's speed is constant is correct, can you think about why the object's velocity isn't constant...
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Answered by Inigo S. • Physics tutor
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What is the angular velocity of a person standing on the surface of the earth. Give your answer in radians per second

Angle through which the earth rotates = 2pi Time to do so = 24 60 60 = 86400s Angular velocity = 7.3x10 -5 rads -1
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Answered by William F. • Physics tutor
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How can I describe the motion of an object falling, due to gravity, through a fluid? And when does the object reach terminal velocity?

Lets consider a skydiver jumping from an airplane. Once the skydiver has let go of the plane they are pulled towards the earth due to gravity. By Newton’s second law: F = ma, the sky diver begins to accelera...
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Answered by Ailsa D. • Physics tutor
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What is polarized light?

When something emits light, the waves produced usually have their oscillation moving at all different angles. You can have some oscillating left and right, up and down, at a 45-degree angle, or any angle ima...
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Answered by Jack P. • Physics tutor
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A ball is thrown at speed u = 10.0 m/s at an angle of 30.0 degrees to the ground at height, s = 0. How far does the ball travel horizontally from its starting position? (Ignore air resistance and taking g = 9.81 m/s^2)

First, find the speed of the ball in the horizontal (x) and vertical (y) directions. u x = u cos(30) = 8.66m/s and u y = u sin(30) = 5 m/s. Using an appropriate suvat equation find the time until the ball la...
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Answered by Alex T. • Physics tutor
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