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WorksheetsFinal Exam
Total questions: 20
Worksheet time: 14mins
Friction is an example of _____________
contact force
non contact force
both of these
none of these
Rough surfaces have _________
greater friction
less friction
the same level of friction
Then how much work is done if it takes 20N to move a box 10 meters
An object that has momentum can be described as _________
a) changing its velocity
b) moving fast
c) resisting changes in its state of motion
d) having its mass in motion
e) encountering a net force
Which one of the following units represents the standard metric units of momentum
Newtons * meter / second
Kilograms * meter / second2
meter / second
Kilograms * meter / second
During a collision. an object experiences an impulse. The impulse causes and is equal to the _____ of the object
energy change
kinetic energy change
force
momentum
momentum change
In an elastic collision...
objects bounce off each other
objects stick together
objects stick together for a while then separate
one object flips over the other
In an elastic collision...
only momentum is conserved
only energy is conserved
both momentum and energy are conserved
neither momentum nor energy are conserved
In an inelastic collision...
only momentum is conserved
only energy is conserved
both momentum and energy are conserved
neither momentum nor energy are conserved
What is the equilibrium ?
change of velocity
When all the forces that act upon an object are balanced
When the net force is not zero
none
The moment of a force causes an object to
move forward
move backward
stop moving
turn about a fixed point
The turning effect of a force on a door is greater when it is applied at
A point near the hinges and perpendicular to the door
A point near the hinges and parallel to the door
A point far away from the hinges and perpendicular to the door
A point far away from the hinges and parallel to the door
