WorksheetsSQSA III REVIEW (PHY SCI) - NEW VERSION
Total questions: 26
Worksheet time: 20mins
A cart at the top of a hill is released and rolls down the hill. Which of the following describes the energy of the cart just as it reaches the bottom of the hill?
The cart has no energy.
The cart has maximum kinetic energy.
The cart has maximum gravitational potential energy.
The cart has equal gravitational potential and kinetic energy.
Which statement best explains the energy transfer as the boy moves from Position 2 to Position 3 as shown in the image?
The boy's potential energy is transferred to the boy's kinetic energy.
The boy's kinetic energy is transferred to the boy's potential energy.
The kinetic energy of the air molecules around the boy is transferred to the boy's kinetic energy.
The boy's potential energy is transferred to the kinetic energy of the air molecules around him.
Which of the following best describes the wagon’s change in energy as it coasts from Point X to Point Y?
The wagon has more kinetic energy at point Y than at Point X
The wagon has the same kinetic energy at Point Y and at Point X
The wagon has more gravitational potential energy at Point Y than at point
The wagon has the same gravitational potential energy at Point Y and at Point X
Which of the following increases when a metal spring is stretched horizontally?
kinetic energy
potential energy
electrical energy
gravitational energy
An astronaut drops a 1.0-kg object and a 5.0-kg object on the Moon. Both objects fall a total distance of 2.0 m vertically.
Which of the following best describes the objects after they have fallen a distance of 1.0 m?
They have each lost kinetic energy
They have each lost the same amount of potential energy
They have each gained the same amount of potential energy
They have each gained one-half of their maximum kinetic energy
Which of the following describes the mechanical energy of a cart at rest at the top of a steep hill?
The cart has no mechanical energy
The cart’s mechanical energy is all kinetic
The cart’s mechanical energy is all potential
The cart’s mechanical energy is half potential and half kinetic
The kinetic energy of the golf club at Point Y is more than the potential energy of the club at Point X as shown in the image.
Which of the following statements best explains why this fact does NOT violate the Law of Conservation of Energy?
Gravity is constant from Point X to Point Y
Air resistance is greater at Point Y than at Point X
Acceleration due to gravity is greater at Point Y than at Point X
Energy is added by the man to the golf club from Point X to Point Y
Which of the following fundamental forces is represented in the diagram?
electromagnetic
gravitational
strong nuclear
weak nuclear
Which list correctly ranks the four fundamental forces of nature from strongest to weakest?
gravitational, strong nuclear, weak nuclear, and electromagnetic
strong nuclear, gravitational, electromagnetic, and weak nuclear
electromagnetic, gravitational, strong nuclear, and weak nuclear
strong nuclear, electromagnetic, weak nuclear, and gravitational
Between any two objects with mass, which of the following fundamental forces acts between the two objects only as an attractive force?
electromagnetic force
strong nuclear force
gravitational force
weak nuclear force
A book rests on a table. The force of gravity pulls down on the book with a force of 20 Newtons.
What prevents the book from accelerating downward at 9.8 m/s2?
The table presses back up on the book with an equal and opposite force of 20 Newtons
The table presses back up on the book with a force greater than 20 Newtons
The table and the book together are accelerating downwards at 9.8 m/s2
The inertia of the book holds it up
A car is traveling at a constant speed of 12 m/s. When the driver accelerates, the car reaches a speed of 26 m/s in 6 s. What is the average acceleration of the car? [Hint: A = (Vfinal - Vinitial) / T]
2 m/s/s
2.3 m/s/s
4.3 m/s/s
84 m/s/s
How long will it take a car to accelerate from 20 m/s to 26 m/s at a rate of 1.4 m/s2? [Hint: A = (Vfinal - Vinitial) / T]
2.2 s
2.7 s
4.3 s
4.6 s
Which point on the position vs. time graph has the fastest speed?
Point 1
Point 2
Point 3
Point 4
According to the displacement-time graph, during which interval is the cat at rest?
0.0s to 5.0s
5.0s to 10.0s
10.0s to 15.0s
15.0s to 20.0s
An object that is NOT subjected to a net force (i.e., unbalanced forces) will either stay at rest or continue to move at a constant velocity.
According to the table, which objects are being subjected to a net force?
Apple, satellite, and ball
Boat, satellite, and ball
Apple, car, and ball
Boat, car, and ball
A 100-N object and a 50-N object are placed on scales A and B respectively inside an elevator ascending with constant velocity 3.0 m/s.
Which statement below correctly describes the readings on the scales inside the elevator?
[Hint: The force of gravity is pushing down on the objects as the elevator ascends]
Scale A reads exactly 100-N, and scale B reads exactly 50-N.
Scale A reads less than 100-N, and scale B reads less than 50-N.
Scale A reads greater than 100-N, and scale B reads less than 50-N.
Scale A reads greater than 100-N, and scale B reads greater than 50-N.
Jim stands on a ladder and drops a hammer and a feather for an experiment. The mass of the hammer is 0.454 kg and the mass of the feather is 2 g. John calculates the accelerations of each object at different times, as shown in the table.
Which statement BEST explains the difference between the hammer and the feather's rates of acceleration? [Hint = Consider air resistance]
The feather's greater inertia decreases its acceleration.
The hammer's greater weight increases its acceleration.
The hammer's greater momentum increases its acceleration.
The feather's greater air resistance decreases its acceleration.
A cardboard box, which weighs around 5.5 kg, has four forces acting upon it, as shown in the diagram.
What is the magnitude of the unknown force (Funknown) acting on the box if the box is accelerating at 2.0 m/s 2 to the right? [Hint: F = m x a]
5 N
6 N
10 N
11 N
Tina tosses a frisbee to her friend. The more force she uses to throw the frisbee, the greater the acceleration.
Which of physics' laws of motion explains that the frisbee has a greater acceleration when it is thrown with a greater force?
Kepler's First Law
Newton's First Law
Kepler's Second Law
Newton's Second Law
Ron is playing volleyball. After he hits the ball, it reaches its maximum height and then falls toward the ground due to the force of gravity.
Which statement best describes the interaction between the ball and Earth?
The ball and Earth attract each other with equal magnitudes of gravitational force.
The ball and Earth produce equal magnitudes of gravitational acceleration on each other.
The gravitational force exerted by the ball is much less than the gravitational force exerted by Earth.
Earth exerts a gravitational force on the ball, but the ball is too small to exert a gravitational force on Earth.
Newton's Second Law of Motion states that F = ma, where F is the force on an object of mass m, which is accelerating at a rate of a.
Joyce tests a bow and arrow at archery practice. She is able to accelerate a 24.0-g (0.024-kg) arrow at an average rate of 70.0 m/s2. What is the bow's average force on the arrow? [Hint: mass is measured in kilograms for this formula]
1.68 N
2.92 N
1.68 x 103 N
2.92 x 103 N
The acceleration of gravity on the surface of Earth is 9.8 m/s/s. On the Moon the acceleration of gravity is 1/6 of this value.
If a woman has a mass of 60 kg, what will her weight be on the Moon in Newtons (N)? [Hint: F = m x a]
0.027 N
98 N
360 N
588 N
How much would a man on Mars weigh in Newtons if he had a mass of 75 kilograms and the acceleration due to gravity on the surface of Mars is 3.7 m/s2? [Hint: F = m x a]
0.05 Newtons
20.3 Newtons
78.7 Newtons
277.5 Newtons
The gravitational acceleration on Earth 9.8 m/s/s while it is 3.71 m/s/s on Mars.
An object on Earth has a mass of 150.00 kilograms (kg) and a weight of 1,470.00 Newtons (N).
Which statement correctly describes the mass and the weight of this object on Mars? [Hint: F = m x a]
The mass of the object on Mars would be 556.50 kg and the weight would be 1,470.00 N.
The mass of the object on Mars would be 40.43 kg and the weight would be 396.23 N.
The mass of the object on Mars would be 150.00 kg and the weight would be 0.38 N.
The mass of the object on Mars would be 150.00 kg and the weight would be 556.50 N.
In the formula for the Law of Universal Gravitation, as expressed in the image, F is the force of attraction, G is the universal gravitational constant (6.674×10−11 N·m2·kg−2), m1 is the mass of the first object, m2 is the mass of the second object, and r is the distance between the centers of the two objects.
A 1.2-kilogram container of sugar sits 2.3 meters away from a 9.4-kilogram bag of flour. What is the gravitational force of attraction between the sugar and the flour?
2.1 x 10 -12 N
1.4 x 10 -10 N
14 N
33 N
