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WorksheetsMotion and Forces
Total questions: 27
Worksheet time: 2hrs 15mins
A student pushes a 12 N book to the right with a force of 10 N. The book experiences a frictional force of 3 N. The free-body force diagram below represents the forces acting on the book.
What is the magnitude of the net force acting on the book?
7 N
11 N
13 N
37 N
Three rocks with masses of 1 kg, 5 kg, and 10 kg fall from the same height. Which of the following describes the inertia of these rocks?
None of the rocks have inertia.
All the rocks have the same inertia.
The 1 kg rock has more inertia than the other two rocks.
The 10 kg rock has more inertia than the other two rocks.
A student ties a string to a box. The student pulls on the string to accelerate the box upward.
Which of the following force diagrams illustrates the forces acting on the box?
A car moves at a constant velocity for 4 s. A student records data on the car’s motion, as shown in the table below, but the student forgets to label the second column of the table.
Which of the following is the missing label?
Acceleration (m/s2)
Distance (m)
Force (N)
Speed (m/s)
A student swings a ball on a string in a circular motion and then cuts the string. Which of the following diagrams shows the direction the ball will initially move when the string is cut?
The diagram below shows an 80 kg ice skater applying a force of 10 N to a 60 kg ice skater.
Which statement best describes the results of applying the 10 N force?
The skaters will not move at all.
The skaters will accelerate away from each other at the same rate.
The skaters will accelerate away from each other, but the 60 kg skater will accelerate at a faster rate.
The 60 kg skater will accelerate away from the 80 kg skater, and the 80 kg skater will remain stationary.
An object is moving west at 30 km/h and another object is moving north at 30 km/h.
Which of the following statements describes the motion of both objects?
They have the same velocity and the same speed.
They have the same velocity but different speeds.
They have different velocities but the same speed.
They have different velocities and different speeds.
A student wants to determine the gravitational attraction between two objects. Which two quantities does the student need to know?
the mass and the charge of each object
the volume and the charge of each object
the mass of each object and the distance between the two objects
the volume of each object and the distance between the two objects
The velocity of a bus is represented in the graph below.
Which of the following best describes how the bus moves over time?
The bus stays in one place for 20 s and then travels at a constant speed.
The bus travels at a constant speed for 20 s and then accelerates at a constant rate.
The bus accelerates at a constant rate for 20 s and then travels at a constant speed.
The bus accelerates at a constant rate for 20 s and then accelerates at an increasing rate.
The graph below represents the vertical displacement of an elevator during a 16 s period.
Which of the following can be concluded from the data in the graph?
Between 2 s and 6 s, the acceleration of the elevator is greatest.
Between 4 s and 12 s, the velocity of the elevator is constant.
Between 8 s and 14 s, the acceleration of the elevator is constant.
Between 14 s and 16 s, the velocity of the elevator is greatest.
A student is investigating the motion of a block sliding down a ramp onto the floor. The diagram below shows the block at five points during the investigation.
The block is at rest at point V. The student releases the block so that it slides down the ramp and stops at point Z.
Which of the following best explains where kinetic friction is acting on the block?
at point W only, because there is kinetic friction only when the block is speeding up
at point Y only, because there is kinetic friction only when the block is slowing down
at points W, X, and Y only, because there is kinetic friction anytime the block is moving on the ramp
at points V, W, X, and Y only, because kinetic friction is the force of gravity between the block and the ramp
A horse runs a distance of 240 m in 20 s. Which of the following is a scalar quantity that can be determined from this information?
the horse’s speed
the horse’s velocity
the horse’s acceleration
the horse’s displacement
The diagram below represents two tug-of-war teams pulling on a rope and the forces for this situation. Group A applies a force of 420 N, and group B applies a force of 380 N.
What is the net force on the rope?
40 N to the right
40 N to the left
800 N upward
800 N downward
Which of the following actions will increase the inertia of a shopping cart?
oiling the cart’s wheels
adding items to the cart
removing the cart’s wheels
rearranging items in the cart
The masses of four objects, W, X, Y, and Z, are shown in the table below.
In which of the following situations is the gravitational force the greatest?
when objects W and X are at a distance of 1 m from each other
when objects Y and Z are at a distance of 1 m from each other
when objects W and Y are at a distance of 2 m from each other
when objects X and Z are at a distance of 2 m from each other
Which of the following describes a vehicle moving at a constant velocity?
A go-cart races at 50 km/hr around a circular track.
A bicycle slows down as it approaches an intersection.
A truck travels north at 70 km/hr on a straight road.
A car steadily speeds up after a traffic light turns green.
The graph below shows the motion of an object in one direction.
Which of the following describes the object’s motion?
The object has a constant speed.
The object has a positive acceleration.
The object has a negative acceleration.
The object has a negative displacement.
The free-body force diagram below represents two forces, F1 and F2, acting on a hot air balloon as it rises through the air.
If the net force acting on the balloon is 120 N upward, what is the magnitude of F2?
980 N
1100 N
1200 N
1220 N
A car is traveling around a level, circular track. Which of the following forces causes the car to stay in a circular path?
the force of air resistance acting on the car
the force of inertia propelling the car forward
the centripetal force from friction acting on the car’s tires
the applied force from the car’s engine turning the wheels
Which of the following best compares average speed with average velocity?
Average speed is always less than average velocity.
Average speed has units of mph and average velocity has units of m/s.
Average speed is a vector quantity, but average velocity is a scalar quantity.
Average speed has only magnitude, but average velocity has both magnitude and direction.
The free-body force diagram below represents four forces acting on an object.
What is the net force on the object?
0 N
2 N to the right
6 N along the vertical axis
18 N in all directions
The graph below represents an object’s motion over four time intervals: W, X, Y, and Z.
During which time interval does the object move with constant, positive velocity?
interval W
interval X
interval Y
interval Z
Two solid blocks with different masses are placed 1.0 m apart on a horizontal surface. Which of the following will occur if the two blocks are moved farther apart?
The gravitational force between the blocks will decrease.
The gravitational force between the blocks will remain the same.
The gravitational force of the more massive block will increase.
The gravitational force of the less massive block will increase.
The planet Mars has two moons, Phobos and Deimos. What is the direction of the force that keeps Phobos orbiting Mars?
toward the Sun
toward Deimos
toward the center of Mars
toward the north pole of Mars
The diagram below shows a pool with a length of 50 m. A person swims three lengths of the pool: from point X to point Y, from point Y to point X, and then from point X to point Y again.
Which table shows the magnitudes of the distance the person traveled and the person’s final displacement?
A book is dropped and falls to the floor. Which of the following describes the forces between the book and the floor when the book hits the floor?
The book exerts a force on the floor, but the floor does not exert a force on the book.
The book does not exert a force on the floor, but the floor exerts a force on the book.
The force exerted by the book on the floor is greater in magnitude than the force exerted by the floor on the book.
The force exerted by the book on the floor is equal in magnitude to the force exerted by the floor on the book.
What is the net force that acts on a 5 kg object accelerating at 2 m/s2?
2.5 N
5 N
10 N
50 N
