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WorksheetsCh 7 Newton's 3rd
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Whenever one object exerts a force on another object, the second object always exerts a force back on the first object.
a)
True
b)
False
2.
A rocketship is pushed forward by gases that are forces out of the back of the ship.
a)
True
b)
False
3.
In order to make a cart move, a horse must pull harder on the cart than the cart pulls back on the horse.
a)
True
b)
False
4.
A bicycle and a parked car have a head on collision. The force of impact is greater on the bicycle.
a)
True
b)
False
5.
A bicycle and a parked car have a head on collision. The negative acceleration is greater on the bicycle.
a)
True
b)
False
6.
If a train is pulling a caboose, the caboose will move if they train exerts a force on the ground that is greater than the force that the caboose exerts on the train.
a)
True
b)
False
7.
Whenever an objects exerts a force on another, the second object exerts a force of the same magnitude, but in the opposite direction of the first.
a)
Sometimes True
b)
Always False
c)
Always True
8.
Forces always occur
a)
as single quanitities
b)
by themselves
c)
in pairs
d)
in triplets
9.
An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. What is the reaction force?
a)
the arrow's push against the bowstring
b)
weight of the arrow
c)
friction fo the ground against the archers feet
d)
air resistance against the arrow
10.
A person is attracted towards the earth by a 440N gravitational force. The force with which the Earth is attracted to the person is
a)
440N
b)
very small
c)
very large
11.
An unfortunate bug splatters against the windshield of a moving car. Compared to the force of the car on the bug, the force of the bug on the car is...
a)
larger
b)
the same
c)
smaller
d)
need more information
12.
An unfortunate bug splatters against the windshield of a moving car. Compared to the deceleration of the car, the deceleration of the bug is...
a)
larger
b)
the same
c)
smaller
d)
need more information
13.
According to Newton's 3rd law, if you push gently on something, it will push...
a)
gently on someone else
b)
on you only if you aren't moving
c)
gently on you
d)
on something only under the right conditions
14.
If a horse pulls on a wagon at rest, the wagon pulls back equally on the horse. Can the wagon be set into motion?
a)
Yes, because there is a net force acting on the wagon
b)
Yes, because there is a time delay between the action and reaction forces
c)
No, because the forces cancel each other out
d)
Yes, because the horses pull is larger than the wagons pull
15.
A woman weighing 500N sits on the floow. She exerts a force of ___ on the floor.
a)
5.0N
b)
50N
c)
500N
d)
1000N
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