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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
5 meters per second
B
2 metes per second
C
50 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
5 meters
B
1 meter
C
0.2 meters
D
125 meters
3) In what ways can an object accelerate?
A
change direction
B
all of these
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
20 N
B
10 N
C
5N
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
10 J
B
30 J
C
300 J
D
3.33 J
6) What type of simple machine would you use to pry open a paint can?
A
inclined plane
B
wheel and axle
C
screw
D
lever
7) What type of simple machine raises or lowers objects from one height to another?
A
screw
B
inclined plane
C
wedge
D
wheel and axle
8) Which simple machine is used for cutting or separating objects?
A
wheel and axle
B
pulley
C
lever
D
wedge
9) Which simple mahcine consists of a grooved wheel and a rope or cable?
A
pulley
B
inclined plane
C
screw
D
wheel and axle
10) Which simple machine has a rod that rotates around a fulcrum?
A
wheel and axle
B
wedge
C
lever
D
pulley
*select an answer for all questions
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