Question 1

Match each item with the correct statement below.​
-As the distance between two objects increases,the gravitational force

Accepted Answer

A) ​increases 
B) ​decreases 
C) ​stays the same 
A) ​increases 
B) ​decreases 
C) ​stays the same

Question 2

"Net force" means the vector sum of all the individual forces acting on a particular body.

Accepted Answer

A) True 
 B)False

Question 3

A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion.
-The acceleration

Accepted Answer

A) is zero. 
B) has its largest magnitude. 
C) points up. 
D) points down. 
A) is zero. 
B) has its largest magnitude. 
C) points up. 
D) points down.

Question 4

During its entire motion,the acceleration of a projectile is always g.

Accepted Answer

A) True 
 B)False

Question 5

You can tell whether a projectile is going upwards or downwards from the sign of __________.

Accepted Answer

the vertic

Question 6

A car goes around a curve at 40 m/s.An accelerometer in the car measures the centripetal acceleration of a 2-kg body in the car to be 8 m/s2.The radius of the curve is __________.

Accepted Answer

Question 7

The vertical speed of a projectile

Accepted Answer

A) is zero. 
B) stays constant. 
C) continuously increases. 
D) continuously decreases. 
E) sometimes decreases and sometimes increases. 
A) is zero. 
B) stays constant. 
C) continuously increases. 
D) continuously decreases. 
E) sometimes decreases and sometimes increases.

Question 8

The force that keeps your feet from sliding as you walk is

Accepted Answer

A) centripetal force. 
B) weight. 
C) kinetic friction. 
D) static friction. 
E) none of the above. 
A) centripetal force. 
B) weight. 
C) kinetic friction. 
D) static friction. 
E) none of the above.

Question 9

A body on the surface of the Earth weighs 400 lb.The radius of the Earth is about 4,000 miles.If this same body were placed on a 4,000-mile-high tower,its weight would be
__________.

Accepted Answer

The answer of A body on the surface of the...

Question 10

Two identical cars are traveling around the same curve on a highway.One of them is moving at 60 mph,and the other is moving at 30 mph.The centripetal force acting on the car moving at 60 mph is __________ the value of the centripetal force acting on the car moving at 30 mph.

Accepted Answer

A) one quarter 
B) one half 
C) the same as 
D) twice 
E) four times 
A) one quarter 
B) one half 
C) the same as 
D) twice 
E) four times

Question 11

The frequency of a body oscillating from a spring on the Moon is___________ the frequency of the same body oscillating from the same spring on Earth.

Accepted Answer

A) the same as 
B) larger than 
C) smaller than 
D) not related to 
E) depending on the mass,smaller or larger than 
A) the same as 
B) larger than 
C) smaller than 
D) not related to 
E) depending on the mass,smaller or larger than

Question 12

​Match each item with the correct statement below.​
-keeps our feet from sliding as we walk

Accepted Answer

A) centripetal force 
B) circle 
C) ellipse 
D) field 
E) kinetic friction
F)mass
G)parabola
H)SI
I)simple harmonic motion
J)static friction
K)terminal speed
L)tides
M)weight 
A) centripetal force 
B) circle 
C) ellipse 
D) field 
E) kinetic friction
F)mass
G)parabola
H)SI
I)simple harmonic motion
J)static friction
K)terminal speed
L)tides
M)weight

Question 13

As an artillery shell travels from the gun to the target,the projectile's vertical speed changes,but its horizontal speed stays constant.

Accepted Answer

A) True 
 B)False

Question 14

Starting from rest,a 20,000-kg aircraft being launched from an aircraft carrier goes from 0 to 90 m/s in 2 seconds.The net force acting on the aircraft is

Accepted Answer

A) 3,600,000 N. 
B) 1,800,000 N. 
C) 900,000 N. 
D) 450,000 N. 
E) 275,000 N. 
A) 3,600,000 N. 
B) 1,800,000 N. 
C) 900,000 N. 
D) 450,000 N. 
E) 275,000 N.

Question 15

The SI units of velocity are

Accepted Answer

A) mi/h. 
B) km/h. 
C) m/s2. 
D) m/s. 
E) none of the above 
A) mi/h. 
B) km/h. 
C) m/s2. 
D) m/s. 
E) none of the above

Question 16

The weight of a body on the Moon is _______________ the weight of the same body on Earth.

Accepted Answer

The answer of The weight of a body on the...

Question 17

You roll a ball off a table and at the same time drop a second ball straight down from the edge of the table.The second ball reaches the ground before the first ball.

Accepted Answer

A) True 
 B)False

Question 18

An object is dropped from a tall building.The net force acting on the object is the difference between the object's _________ and the force of air resistance.

Accepted Answer

The answer of An object is dropped from a tall...

Question 19

The resistance to relative motion of two bodies in contact with each other is called __________.

Accepted Answer

The answer of The resistance to relative motion of two...

Question 20

The velocity points down.

Accepted Answer

A) True 
 B)False

Match each item with the correct statement below. -As the distance between two objects increases,the gravitational force

"Net force" means the vector sum of all the individual forces acting on a particular body.

A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion. -The acceleration

During its entire motion,the acceleration of a projectile is always g.

You can tell whether a projectile is going upwards or downwards from the sign of __________.

A car goes around a curve at 40 m/s.An accelerometer in the car measures the centripetal acceleration of a 2-kg body in the car to be 8 m/s².The radius of the curve is __________.

The vertical speed of a projectile

The force that keeps your feet from sliding as you walk is

A body on the surface of the Earth weighs 400 lb.The radius of the Earth is about 4,000 miles.If this same body were placed on a 4,000-mile-high tower,its weight would be __________.

Two identical cars are traveling around the same curve on a highway.One of them is moving at 60 mph,and the other is moving at 30 mph.The centripetal force acting on the car moving at 60 mph is __________ the value of the centripetal force acting on the car moving at 30 mph.

The frequency of a body oscillating from a spring on the Moon is___________ the frequency of the same body oscillating from the same spring on Earth.

Match each item with the correct statement below. -keeps our feet from sliding as we walk

As an artillery shell travels from the gun to the target,the projectile's vertical speed changes,but its horizontal speed stays constant.

Starting from rest,a 20,000-kg aircraft being launched from an aircraft carrier goes from 0 to 90 m/s in 2 seconds.The net force acting on the aircraft is

The SI units of velocity are

The weight of a body on the Moon is _______________ the weight of the same body on Earth.

You roll a ball off a table and at the same time drop a second ball straight down from the edge of the table.The second ball reaches the ground before the first ball.

An object is dropped from a tall building.The net force acting on the object is the difference between the object's _________ and the force of air resistance.

The resistance to relative motion of two bodies in contact with each other is called __________.

The velocity points down.

The Study of Motion

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electricity

Electromagnetism and Em Waves

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Exam 2: Newtons Laws

Match each item with the correct statement below.​ -As the distance between two objects increases,the gravitational force

"Net force" means the vector sum of all the individual forces acting on a particular body.

A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion. -The acceleration

During its entire motion,the acceleration of a projectile is always g.

You can tell whether a projectile is going upwards or downwards from the sign of __________.

A car goes around a curve at 40 m/s.An accelerometer in the car measures the centripetal acceleration of a 2-kg body in the car to be 8 m/s2.The radius of the curve is __________.

The vertical speed of a projectile

The force that keeps your feet from sliding as you walk is

A body on the surface of the Earth weighs 400 lb.The radius of the Earth is about 4,000 miles.If this same body were placed on a 4,000-mile-high tower,its weight would be __________.

Two identical cars are traveling around the same curve on a highway.One of them is moving at 60 mph,and the other is moving at 30 mph.The centripetal force acting on the car moving at 60 mph is __________ the value of the centripetal force acting on the car moving at 30 mph.

The frequency of a body oscillating from a spring on the Moon is___________ the frequency of the same body oscillating from the same spring on Earth.

​Match each item with the correct statement below.​ -keeps our feet from sliding as we walk

As an artillery shell travels from the gun to the target,the projectile's vertical speed changes,but its horizontal speed stays constant.

Starting from rest,a 20,000-kg aircraft being launched from an aircraft carrier goes from 0 to 90 m/s in 2 seconds.The net force acting on the aircraft is

The SI units of velocity are

The weight of a body on the Moon is _______________ the weight of the same body on Earth.

You roll a ball off a table and at the same time drop a second ball straight down from the edge of the table.The second ball reaches the ground before the first ball.

An object is dropped from a tall building.The net force acting on the object is the difference between the object's _________ and the force of air resistance.

The resistance to relative motion of two bodies in contact with each other is called __________.

The velocity points down.

The Study of Motion

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electricity

Electromagnetism and Em Waves

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Match each item with the correct statement below. -As the distance between two objects increases,the gravitational force

A car goes around a curve at 40 m/s.An accelerometer in the car measures the centripetal acceleration of a 2-kg body in the car to be 8 m/s².The radius of the curve is __________.

Match each item with the correct statement below. -keeps our feet from sliding as we walk