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PHSC Week 21 - Ch12-13

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.
Acceleration is the time rate of change of an object's velocity.
a)
True
b)
False
2.
Some objects may be in motion even when they do not appear to be.
a)
True
b)
False
3.
Acceleration is equal to initial velocity minus final velocity. 
a)
True
b)
False
4.
There is a no difference between speed and velocity.
a)
True
b)
False
5.
Do you multiply or divide distance and time traveled to find the speed?
a)
Multiply
b)
Divide
c)
Both
6.
A ___________ is a physical measurement that contains directional info. 
a)
vector quantity
b)
distance quantity
c)
scalar quantity
d)
directional
7.
The acceleration due to gravity for any object is __________.
a)
E= mc2
b)
9.8 m/seconds squared 
c)
p2 - p1
d)
d/t
8.
A physical measurement that does not contain directional information is ____________.
a)
acceleration
b)
mechanics
c)
a vector quantity
d)
a scalar quantity
9.
A point against which position is measured is a ___________.
a)
relative point
b)
position point
c)
motion point
d)
reference point
10.
Acceleration is... 
a)
speeding up
b)
slowing down
c)
changing direction
d)
All of the other 3
11.

Speed is relative.

a)

True

b)

False

12.

What is motion?

a)

a change in position

b)

the length of a route between two points

c)

a quantity that includes both size and direction

d)

a use of energy

13.

When 2 forces act in the same direction, the ___ ___ is equal to the sum of the forces.

a)

kinetic friction

b)

average speed

c)

static friction

d)

net force

14.

If one person pushes a box with 100 N to the right and the other person is pushing to the left with a force of 25 N what is the net force?

a)

125 N

b)

80 N

c)

-125 N

d)

75 N

15.

Kinetic friction is always greater than static friction.

a)

True

b)

False

16.

Friction that acts on objects when they are rolling over a surface.

a)

Static friction

b)

Sliding friction

c)

Fluid friction

d)

Rolling friction

17.

Friction that acts on objects when they are not moving relative to each other.

a)

Static friction

b)

Sliding friction

c)

Fluid friction

d)

Rolling friction

18.

Friction that acts on objects when they are moving through air or water.

a)

Static friction

b)

Sliding friction

c)

Fluid friction

d)

Rolling friction

19.

Friction that happens as you push a box across the floor.

a)

Static friction

b)

Sliding friction

c)

Fluid friction

d)

Rolling friction

20.

The SI unit for force is the

a)

newton (N).

b)

meter (m).

c)

push (p).

d)

vector (v).

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