Forces and Motion 1
Forces and motion 2
Forces and Motion 3
Forces and Motion 4
Forces and Motion 5
100
B.
100
A push or pull is a ___.
a. velocity
b. force
c. balanced force
d. direction
B.
100
Student A is pushing a box with a force of 20N to the right. Student B is pushing with a force of 20 N to the right. Will the box move?
a. No, the forces are equal and opposite.
b. No, the forces are unbalanced.
c. Yes, the forces are equal and opposite.
d. Yes, the forces are in the same direction and greater than the box's inertia.
D.
100
C.
100
Stefan pushes a cart with three books so it reaches the end of a track. He puts six books onto the cart. What must he use next time so the cart reaches the end of the track?
a. less force
b. more force
c. the same force
d. a different cart
B. more force
200
D
200
Unit of measurement for force is...
a. grams
b. liters
c. Newtons
d. inches
C.
200
Forces that cause a change in motion are called..
a. unbalanced forces
b. balanced forces
A
200
D.
200
Energy can be destroyed.
TRUE or FALSE
FALSE
300
A large rock is motionless on a flat sidewalk. Which statement best explains why the rock remains motionless?
A) There are no forces acting on the rock.
B)The only force acting on the rock is directed toward the sidewalk.
C) The forces acting on the rock are all balanced
D) The sidewalk exerts an unbalanced force on the rock.
C
300
A force between two surfaces which prevents them from sliding past one another; a force that acts in the opposite direction of the traveling object.
a. gravity
b. friction
c. inertia
d. speed
B.
300
Which of the following statements most accurately describes why the moon orbits Earth?
a. The Moon is repelled by the mass of Earth's neighboring planets, Venus and Mars.
b. The moon orbits Earth because the force of gravity causes the mass of the Moon to be attracted to the mass of the Earth.
c. The air currents in space cause winds to circulate around the Moon and Earth, pushing the moon toward Earth.
d. Because there is no water on the moon, it's dry surface is pulled in by the moisture in the Earth's atmosphere.
B.
300
A.
300
a. 12 cm
b. 30 cm
c. 57 com
d. 98 cm
C.
400
Besides size/magnitude, what does every force have?
a. direction
b. push
c. pull
d. velocity
A.
400
An object that is accelerating can be
described as a(n) _____________ force.
a. balanced
b. unbalanced
B.
400
a. Object 1
b. Object 2
c. The objects have equal gravitational force.
d. Neither object has a gravitational force.
A.
400
C.
400
Why would an object in a spacecraft float in air rather than fall to the floor?
a. There is no gravity in space.
b. None of Newton's Laws of Motion applies to space.
c. The force of gravity in space is less than it is on Earth.
d. Inertia allows the object to overcome the force of gravity.
c. The force of gravity in space is less than it is on Earth.
500
Which of the following events is most likely caused by the force of gravity?
a. A breeze moves a piece of trash across the parking lot.
b. A puddle of water evaporates on a warm day.
c. A coin is flipped into the air, then falls toward the ground.
d. A campfire warms the skin of a person sitting nearby.
C.
500
A snowboarder stands along the upper edge of a half-pipe, and quickly glides down to the center. As she approaches the opposite edge, her motion slows, and she begins to move toward the center again. Why does the snowboarder never reach the top of the opposite edge?
a. The force of gravity pulls her back toward Earth's center.
b. The mass of the snowboarder pulls her away from Earth Center.
c. The force of gravity pulls her away from Earth's center.
d. The force of the snowboarder pulls her toward Earth's center.
A.
500
Louis is lifting a box. The force he needs stop lift the box will depend on..
a. the volume but not the mass of the box
b. neither the volume nor the mass of the box
c. the mass of the box but not its volume
d. both the mass and volume of the box
C.
500
Which of the following objects will have the greatest change in motion?
a. A small force is applied to an object with a large mass.
b. A small force is applied to an object with a small mass.
c. A large force is applied to an object with a large mass.
d. A large force is applied to an object with a small mass.
D.
500
If Alonzo wished to determine how the size of a force affected the motion of an object, which of the following would be the best strategy for his experiment?
a. Propel several toy cars of different shapes and designs across the surface using a rubber band
b. Propel a toy car across a flat surface using a rubber band stretched to three different degrees
c. Propel a toy car across flat and slope surfaces using a variety of objects, including rubber bands
d. Propel three toy cars of different masses across a flat surface using a rubber band stretched to the same degree each time
B.