Question 1

The gravitational acceleration constant for the moon is -1.62 m/s2. If a person has a mass of 76 kg on earth, what is their weight on the moon?

Accepted Answer

A)  76 N
B)  7) 75 N
C)  12.55 N
D)  123 N

Question 2

What is the force of attraction that exists between a car and a motorcycle if they are parked 1.4 m away from each other. The car weighs 1,375 kg and the motorcycle weighs 180 kg.

Accepted Answer

A)  4.2 x 10-6 N
B)  8.4 x 10-6 N
C)  1.1 x 10-5 N
D)  1.6 x 10-5 N

Question 3

Which variable is replaced with g = - 9.8 m/s2 in the equation F=ma when the force is gravity?

Accepted Answer

A)  F
B)  m
C)  a
D)  None of the above

Question 4

A 2.4 Volt beard trimmer has a 12 Ohm resistance. What current flows through the trimmer?

Accepted Answer

A)  0.02 A
B)  0.2 A
C)  2 A
D)  20 A

Question 5

A ball is dropped from a building onto a scale below. The scale reads 92.5 N at the moment of impact. What is the mass of the ball?

Accepted Answer

A)  9.2 kg
B)  -9.2 kg
C)  -9.4 kg
D)  9.4 kg

Question 6

A 9 Volt flashlight uses a bulb with 30 Ohm resistance. What current flows through the flashlight?

Accepted Answer

A)  0.03 A
B)  0.3 A
C)  3 A
D)  3.33 A

Question 7

A car that has a mass of 800 kg slows down. The brakes exert a force of -2780 N. What is the acceleration of the car?

Accepted Answer

A)  2.7 m/s²
B)  -2.7 m/s²
C)  3.5 m/s²
D)  -3.5 m/s²

Question 8

A 2 kg basketball is thrown through the air northward with a velocity of 2 m/s. What is its momentum?

Accepted Answer

A)  4 kg m/s north
B)  8 kg m/s north
C)  2 kg m/s north
D)  40 kg m/s north

Question 9

How many amperes does a 220 Volt hair drier draw when it delivers 2200 Watts of power?

Accepted Answer

A)  0.1 A
B)  1 A
C)  10 A
D)  100 A

Question 10

A 5 kg ball rolls down a hill at a velocity of 1.5 m/s. By the time it reaches the bottom of the hill, it is traveling with a velocity of 2 m/s. What is the change in the ball's momentum?

Accepted Answer

A)  25 kg m/s
B)  2.5 m/s
C)  2.5 kg m/s
D)  0.25 kg m/s

Question 11

A person jumps in the air. When they reach their peak height, they are 0.65m off of the ground. The person as a mass of 83 kg. What is their gravitational potential energy?

Accepted Answer

A)  515 J
B)  530 J
C)  545 J
D)  560 J

Question 12

A 20 kg bicycle is accelerated from 3 m/s to 4 m/s. What is its change in momentum?

Accepted Answer

A)  20 kg m/s
B)  2 kg m/s
C)  200 kg m/s
D)  20 m/s

Question 13

Two objects are placed 75 m apart. If the two objects have masses of 3.6 kg and 3.5 kg, what is the force of attraction between the objects?

Accepted Answer

A)  3.0 x 10-13 N
B)  4.6 x 10-13 N
C)  1.5 x 10-11 N
D)  1.5 x 10-13 N

Question 14

If a wave in a string travels at 52 m/s and has a wavelength of 0.65 m, what is the frequency?

Accepted Answer

A)  0) 0125 Hz
B)  80 Hz
C)  12.5 Hz
D)  65 Hz

Question 15

Experiments have shown that the maximum wavelength of a sound wave that a healthy person can hear is 17 meters. What would be the frequency of this sound? (The speed of sound is 340 m/s)

Accepted Answer

A)  0.05 Hz
B)  0.34 Hz
C)  20 Hz
D)  25 Hz

Question 16

Energy, both Kinetic and Potential, are expressed in what units?

Accepted Answer

A)  Kilograms
B)  Meters/second
C)  Joules
D)  Kilometers

Question 17

Which of the following is a scalar quantity?

Accepted Answer

A)  10 steps up
B)  10 miles north
C)  10 paces
D)  10 yards to the right

Question 18

Which one of the following is the definition of Frequency of a wave?

Accepted Answer

A)  The displacement of the wave from its rest position
B)  Highest point of a transverse wave
C)  Measurement of time per a single wave to be created
D)  The number of waves created per second

Question 19

Acceleration due to Earth's gravity is -9.8 m/s2. Which part of this number gives the information on direction, making it a vector quantity?

Accepted Answer

A)  We know it is a vector quantity because the seconds are squared in the units.
B)  We know it is a vector quantity because the negative sign tells us the acceleration is upward.
C)  We know it is a vector quantity because the negative sign tells us the acceleration is downward.
D)  We know it is a vector quantity because the negative sign tells us the magnitude of the acceleration.

Question 20

What is the force that an object exerts on the ground due to gravity called?

Accepted Answer

A)  Mass
B)  Heaviness
C)  Density
D)  Weight

Exam 7: HESI-A2-Physics

Energy, both Kinetic and Potential, are expressed in what units?

Correct AnswerverifiedShow Answer

A person jumps in the air. When they reach their peak height, they are 0.65m off of the ground. The person as a mass of 83 kg. What is their gravitational potential energy?

Correct AnswerverifiedShow Answer

A 20 kg bicycle is accelerated from 3 m/s to 4 m/s. What is its change in momentum?

Correct AnswerverifiedShow Answer

Which of the following is a scalar quantity?

Correct AnswerverifiedShow Answer

Two objects are placed 75 m apart. If the two objects have masses of 3.6 kg and 3.5 kg, what is the force of attraction between the objects?

Correct AnswerverifiedShow Answer

What is the force that an object exerts on the ground due to gravity called?

Correct AnswerverifiedShow Answer

Experiments have shown that the maximum wavelength of a sound wave that a healthy person can hear is 17 meters. What would be the frequency of this sound? (The speed of sound is 340 m/s)

Correct AnswerverifiedShow Answer

Which one of the following is the definition of Frequency of a wave?

Correct AnswerverifiedShow Answer

What is the force of attraction that exists between a car and a motorcycle if they are parked 1.4 m away from each other. The car weighs 1,375 kg and the motorcycle weighs 180 kg.

Correct AnswerverifiedShow Answer

A 5 kg ball rolls down a hill at a velocity of 1.5 m/s. By the time it reaches the bottom of the hill, it is traveling with a velocity of 2 m/s. What is the change in the ball's momentum?

Correct AnswerverifiedShow Answer

A ball is dropped from a building onto a scale below. The scale reads 92.5 N at the moment of impact. What is the mass of the ball?

Correct AnswerverifiedShow Answer

If a wave in a string travels at 52 m/s and has a wavelength of 0.65 m, what is the frequency?

Correct AnswerverifiedShow Answer

A 2 kg basketball is thrown through the air northward with a velocity of 2 m/s. What is its momentum?

Correct AnswerverifiedShow Answer

A car that has a mass of 800 kg slows down. The brakes exert a force of -2780 N. What is the acceleration of the car?

Correct AnswerverifiedShow Answer

The gravitational acceleration constant for the moon is -1.62 m/s2. If a person has a mass of 76 kg on earth, what is their weight on the moon?

Correct AnswerverifiedShow Answer

How many amperes does a 220 Volt hair drier draw when it delivers 2200 Watts of power?

Correct AnswerverifiedShow Answer

A 9 Volt flashlight uses a bulb with 30 Ohm resistance. What current flows through the flashlight?

Correct AnswerverifiedShow Answer

A 2.4 Volt beard trimmer has a 12 Ohm resistance. What current flows through the trimmer?

Correct AnswerverifiedShow Answer

Acceleration due to Earth's gravity is -9.8 m/s2. Which part of this number gives the information on direction, making it a vector quantity?

Correct AnswerverifiedShow Answer

Which variable is replaced with g = - 9.8 m/s2 in the equation F=ma when the force is gravity?

Correct AnswerverifiedShow Answer

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The gravitational acceleration constant for the moon is -1.62 m/s². If a person has a mass of 76 kg on earth, what is their weight on the moon?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Acceleration due to Earth's gravity is -9.8 m/s². Which part of this number gives the information on direction, making it a vector quantity?

Correct Answer
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Which variable is replaced with g = - 9.8 m/s² in the equation F=ma when the force is gravity?

Correct Answer
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