Forces Question Preview (ID: 167)
Goal 2 - The Learner Will Construct An Understanding Of Forces And Motion
Objective 2.02 - Investigate And Analyze Forces As Interactions That Can Change Motion.
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Newton's 1st law of motion describes the tendency of objects in motion to continue in motion and objects at rest to remain at rest. What term is used to describe this behavior?
a) velocity
b) acceleration
c) displacement
d) inertia
Which statement about the weight of an object is correct?
a) The force of gravity determines an object's weight.
b) Weight is an unchanging measure of an object's mass.
c) The weight and mass of an object are the same.
d) An object's weight is not related to its mass.
Two students push on a box in the same direction, and one pushes in the opposite direction. What is the net force on the box if each pushes with a force of 50 N?
a) 150 N
b) 100 N
c) 50 N
d) 0 N
A group of students are playing tug-of-war. The students on both sides of the rope are pulling with equal force. This is an example of __________________.
a) unbalanced forces
b) displacement
c) acceleration
d) balanced forces
On Earth, a bookbag weighs 100 N. What is the bookbag's mass?
a) 10 kg
b) 98 kg
c) 0.098 kg
d) cannot be determined
Find the acceleration of gravity on Mars if a person with a mass of 60.0 kg weighs 22.2 N on Mars.
a) 2.7 m/s/s
b) 0.37 m/s/s
c) 9.8 m/s/s
d) 1332 m/s/s
What is the force of air resistance on an 80 kg sky diver who is falling downward with an acceleration of 4.0 m/s/s?
a) 464 N
b) 392 N
c) 320 N
d) 784 N
When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called _______________.
a) centripetal
b) frictional
c) gravitational
d) action-reaction
The size of the gravitational force between two objects depends on their ____________.
a) frictional forces
b) inertia
c) masses and distance between them
d) speed and direction
In what direction is the net force of an object moving in circular motion?
a) away from the center of the circle
b) toward the center of the circle
c) opposite to the object's velocity
d) along the object's velocity
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