AnswersPhysics ICentripetal Acceleration

Pretest Answers

10 verified answers1 views
1
Free Preview

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
Free Preview

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

A
as it lifts off from Earth
B
as it is pulled in a line toward the Sun
C
as it revolves around a planet
D
as it flies straight past a moon
3

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, but Juan travels a shorter distance and has a lower speed.
B
Juan moves a shorter distance in less time than Kuri, but their speeds are the same.
C
Juan and Kuri complete one revolution in the same time, so they have the same speed.
D
Juan and Kuri move the same distance in one revolution, but Juan completes the revolution in less time and has a higher speed.
4

Which is a characteristic of centripetal acceleration?

A
It results in an object moving faster.
B
It is directed outward from the center of a circle.
C
It is directed inward, toward the center of a circle.
D
It results in an object moving slower.
5

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
0 point 3 0 m/s
B
1 point 2 m/s
C
1 point 5 m/s
D
7 point 5 m/s
6

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

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

A
The speed increases in the same direction.
B
The speed decreases in the same direction.
C
The direction changes along with the speed.
D
The direction changes but not the speed.
8

Which is a characteristic of centripetal acceleration?

A
It is directed outward from the center of a circle.
B
It is directed inward, toward the center of a circle.
C
It results in an object moving faster.
D
It results in an object moving slower.
9

Which expression can be used to calculate centripetal acceleration?

A
the fraction with numerator 4 pi squared r and denominator cap t to the th power
B
the fraction with numerator 2 pi r and denominator cap t
C
the fraction with numerator 4 pi squared r and denominator cap t squared
D
the fraction with numerator open paren 2 pi r close paren squared and denominator cap t squared
10

Question text not available

Answer:

tangential speed

Did you find these answers helpful?

More from this Course

lesson pretest
7 verified answers

Pretest

lesson pretest
10 verified answers

Pretest

lesson pretest
10 verified answers

Pretest

Pretest Answers — Physics I