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Work, Force And Motion
Test Description: Speed, acceleration, work, simple machines
Instructions: Answer all questions to get your test result.
1) A girl runs 50 meters in five seconds. What is her average speed?
A
2 metes per second
B
50 meters per second
C
5 meters per second
D
10 meters per second
2) A machine did 25 Joules of work on a 5 kg box. How far did the box move? W = F x d
A
0.2 meters
B
5 meters
C
125 meters
D
1 meter
3) In what ways can an object accelerate?
A
all of these
B
change direction
C
slow down
D
speed up
4) How much force is needed to accelerate a 10 kg object to 2 m/s/s? F = m x a
A
10 N
B
5N
C
20 N
D
2 N
5) A boy picked up a 10 kg box three meters. How much work did the boy do? W = F x d
A
3.33 J
B
300 J
C
10 J
D
30 J
6) What type of simple machine would you use to pry open a paint can?
A
wheel and axle
B
screw
C
lever
D
inclined plane
7) What type of simple machine raises or lowers objects from one height to another?
A
wheel and axle
B
wedge
C
inclined plane
D
screw
8) Which simple machine is used for cutting or separating objects?
A
wedge
B
wheel and axle
C
pulley
D
lever
9) Which simple mahcine consists of a grooved wheel and a rope or cable?
A
inclined plane
B
pulley
C
wheel and axle
D
screw
10) Which simple machine has a rod that rotates around a fulcrum?
A
wheel and axle
B
lever
C
wedge
D
pulley
*select an answer for all questions
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