AnswersPhysicsCentripetal Acceleration

Centripetal Acceleration — Quiz Answers

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1
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Which situation during a basketball game involves centripetal acceleration?

A
A player passes the ball to another player.
B
The official tosses the ball up for the opening tip-off.
C
A player spins a basketball on his finger.
D
The basketball bounces off the backboard.
2
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Which expression can be used to calculate centripetal acceleration?

A
the fraction with numerator 4 pi squared r and denominator cap t squared
B
the fraction with numerator 2 pi r and denominator cap t
C
the fraction with numerator open paren 2 pi r close paren squared and denominator cap t squared
D
the fraction with numerator 4 pi squared r and denominator cap t to the th power
3

A spinning top rotates so that its edge turns at a constant speed of 0 point 6 3 m/s If the top has a radius of 0 point 1 0 m , what is the centripetal acceleration of the edge of the top?

A
6 point 3 m/s squared
B
0 point 0 1 6 m/s squared
C
4 point 0 m/s squared
D
0 point 7 3 m/s squared
4

How does an object’s motion change as a result of centripetal acceleration?

A
The speed increases in the same direction.
B
The direction changes along with the speed.
C
The speed decreases in the same direction.
D
The direction changes but not the speed.
5

Which is a characteristic of centripetal acceleration?

A
It is directed inward, toward the center of a circle.
B
It is directed outward from the center of a circle.
C
It results in an object moving faster.
D
It results in an object moving slower.
6

In which situation would a space probe most likely experience centripetal acceleration?

A
as it flies straight past a moon
B
as it lifts off from Earth
C
as it is pulled in a line toward the Sun
D
as it revolves around a planet
7

The tip of a pinwheel is 0 point 2 4 m from the center. The pinwheel spins 5 times each second. What is the tangential speed of the tip of the pinwheel?

A
1 point 5 m/s
B
7 point 5 m/s
C
1 point 2 m/s
D
0 point 3 0 m/s
8

When is an object moving in uniform circular motion?

A
when it has no net force acting on it
B
when it speeds up around a curve
C
when its acceleration is tangent to a circle
D
when its tangential speed is constant
9

Juan and Kuri are on a carousel. Juan is closer to the center of the carousel than Kuri. Which statement describes their tangential speeds?

A
Juan and Kuri complete one revolution in the same time, so they have the same speed.
B
Juan and Kuri move the same distance in one revolution, but Juan completes the revolution in less time and has a higher speed.
C
Juan and Kuri complete one revolution in the same time, but Juan travels a shorter distance and has a lower speed.
D
Juan moves a shorter distance in less time than Kuri, but their speeds are the same.
10

Question text not available

Answer:

tangential speed

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