Answers2003390-Physics 1 Honors Sem. 1 - PetersCircular Motion

Circular Motion — Unit test Answers

0 verified answers
1
Free Preview

Projectile motion is a combination of which two types of motion?

A
parabolic and curved
B
straight and diagonal
C
horizontal and vertical
D
constant and linear
2
Free Preview

Suchita makes a table to identify the variables used in the equations for centripetal force.

Question illustration
A
X: tangential speedY: radius
B
X: radiusY: tangential speed
C
X: centripetal forceY: mass
D
X: massY: centripetal force
3

In the equation for the gravitational force between two objects, which quantity must be squared?

A
m1
B
m2
C
G
D
d
4

The mass of Mars is 6.42 × 1023 kg. Its moon Phobos is 9378 kilometers away from Mars and has a mass of 1.06 × 1016 kg.

A
5.16 × 1015 N
B
5.16 × 1021 N
C
4.84 × 1022 N
D
4.84 × 1025 N
5

Review the table detailing the mass of Jupiter’s moons and their distance from the planet.

Question illustration
A
Io
B
Europa
C
Ganymede
D
Callisto
6

Which changes would result in a decrease in the gravitational force between two objects? Check all that apply.

A
increasing the distance between the objects
B
decreasing the distance between the objects
C
increasing the mass of one of the objects
D
increasing the mass of both objects
E
decreasing the mass of one of the objects
F
decreasing the mass of both objects
7

The gravitational force between two objects is 3600 N. What will be the gravitational force between the objects if the mass of each object is reduced to one-third of its original mass?

A
400 N
B
1200 N
C
10,800 N
D
32,400 N
8

An object is in circular motion. How will the object behave if the centripetal force is removed?

A
It would move in a line away from the circle’s center.
B
It would move in a line toward the circle’s center.
C
It would move in a curved, circular path.
D
It would move in a line tangent to the circular path.
9

Johanna makes the table below to organize her notes about centripetal forces.Which type of force should she place in the cell marked X?

Question illustration
A
tension
B
gravity
C
friction
D
normal
10

The acceleration due to gravity on Jupiter is 23.1 m/s2, which is about twice the acceleration due to gravity on Neptune.

A
An object weighs about one-fourth as much on Jupiter as on Neptune.
B
An object weighs about one-half as much on Jupiter as on Neptune.
C
An object weighs about two times as much on Jupiter as on Neptune.
D
An object weighs about four times as much on Jupiter as on Neptune.
11

Which situation during a basketball game involves centripetal acceleration?

A
The official tosses the ball up for the opening tip-off.
B
A player passes the ball to another player.
C
The basketball bounces off the backboard.
D
A player spins a basketball on his finger.
12

A ball that has a mass of 0.25 kg spins in a circle at the end of a 1.6 m rope. The ball moves at a tangential speed of 12.2 m/s.

A
1.9 N
B
23 N
C
59 N
D
93 N
14

Neptune has a mass that is about 17 times the mass of Earth. The distance between the Sun and Neptune is about 30.1 times the distance between the Sun and Earth.If the gravitational force between the Sun and Earth is 3.5 x 1028 N, which is closest to the force between Neptune and the Sun?

A
6 x N
Option A
B
6 x N
Option B
C
6 x N
Option C
D
6 x N
Option D
15

[BLANK]

A
0.0051
B
0.43
C
25
D
84
17

Which are the effects of gravity on objects on the surface of Earth? Select 2 options.

A
Objects “fall” toward the center of Earth.
B
Objects are pulled by Earth but do not pull on Earth.
C
Objects accelerate at a rate of 9.8 m/s each second.
D
Objects travel at a rate of 9.8 m/s toward the center of Earth.
E
Objects pull on the Earth is much stronger than the Earth’s pull on the object.
18

A car drives toward the right over the top of a hill, as shown below.

Question illustration
A
W
B
X
C
Y
D
Z
19

What is the downward pull on an object due to gravity?

A
mass
B
weight
C
acceleration
D
velocity
20

[BLANK]

A
2.86
B
3.24
C
4.16
D
5.44
21

Which equation is used to calculate the weight of an object on a planet?

A
w = mg
B
w = mG
C
w =
Option C
D
w =
Option D
22

Which formula can be used to calculate the horizontal displacement of a horizontally launched projectile?

A
x = vi(cos )
Option A
B
x = vi(sin )t
Option B
C
x = ayt
Option C
D
x = vxt
Option D

Did you find these answers helpful?

More from this Course

Quiz
20 verified answers

Introduction to Forces

Quiz
14 verified answers

Circular Motion

Quiz
14 verified answers

Lesson 5: Circular Motion