Circular Motion & Gravitation

Centripetal acceleration always points

• in the direction of the object's motion

• In the opposite direction of the object's motion

• towards the center of the circle

• towards the outside of the circle

Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?

• 0.25 m/s^2

• 0.5 m/s ^2

• 1 m/s^2

• 2ms^2

Period (T) is measured in cycles per second

• True

• False

Tags

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What is the force that causes centripetal acceleration when a car goes around a curve?

• Friction

• Gravity

• Normal

• Tension

Tags

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Who created the Universal Law of Gravitation?

• Copernicus

• Newton

• Kelper

• Galileo

Tags

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If you went to the moon, would your weight change?

• Yes

• No

• Maybe

Tags

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A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?

• A

• B

• C

• D

Tags

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What is the unit of measurement for weight

• Grams (g)

• Newtons (N)

• Pounds (lbs)

• Kilograms (Kg)

what happens to gravity as distance increases?

• there was never any gravity in space

• It decreases rapidly

• it in increases rapidly

• It does not change

Tags

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does mass or weight change on an object in space

• Only weight

• Only Height

• None of them

• both of them

Tags

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