WorksheetsIntro to forces
Total questions: 13
Worksheet time: 26mins
What is gravity?
a noncontact force
a frictional force
a contact force
a magnetic force
Which of these is considered a contact force?
the force between two charged particles
the friction between an object and air
the gravitational pull of a planet
the force between two magnets
A box has two forces acting on it. Once force is 100 N upward. Another force is 50 N downward. What is the net force of the box?
50 N downward
50 N upward
100 N upward
100 N downward
Melanie watched the path a baseball followed after a pitcher threw it. She noticed that the ball traveled horizontally away from the pitcher as well as downward toward the ground. What force caused the ball to accelerate in the downward direction when it was thrown?
applied force
air resistance
electrical force
gravitational force
Why are some forces considered to be noncontact forces?
Objects push each other apart to increase the distance between them.
Objects must be large in size in order to exert a force that is strong enough to notice.
Objects do not have to touch each other to experience a force.
Objects must be far apart in order to exert a force.
Why is the friction force considered to be a contact force?
Friction affects only solid objects.
Friction always acts in the same direction.
Friction is produced when objects slide past one another.
Friction acts in a direction opposite to the direction of an object's motion.
Why is the magnetic force considered to be a noncontact force?
Magnets must be large in size in order to exert a force that is strong enough to notice.
Magnets push each other apart to increase the distance between them.
Magnets do not have to touch each other to experience a force.
Magnets must be far apart in order to exert a force.
The diagram shows the forces acting on a box. What is the the vertical net force (up and down)?
50 N up
50 N down
0 N no movement
0 N down
The diagram shows the forces acting on a box. What is the the horizontal net force (left and right)?
50 N right
50 N left
0 N no movement
150 right
The diagram shows the forces acting on a box. Predict how the box will move.
up and left
down and left
only right
only left
Sean is moving heavy furniture by sliding it across the floor. He puts a blanket underneath the furniture. Why did this help him?
The friction is larger between the blanket and the floor than between the furniture and the floor.
The blanket protects the side of the furniture from bumping against the wall.
The friction is smaller between the blanket and the floor than between the furniture and the floor.
The blanket reduces the gravitational force between the furniture and the floor.
In which situation is it better to have
low friction?
a skydiver uses a parachute
a student walks down a hallway
a ladder leans against the wall
a hockey puck slides toward the goal
Planets A and B are both the same size, but planet B has three times the mass of planet A. How does the weight of an object compare on the two planets?
The weight of an object will depend on more factors than just the weight and size of the planet.
The weight of an object is three times larger on planet B.
The weight of an object is three times larger on planet A.
The weight of an object is the same on
both planets.
