
4.3 net force extra practice
Authored by Erin Martin
Physics
12th Grade
NGSS covered
Used 2+ times

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14 questions
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1.
HOTSPOT QUESTION
2 mins • 1 pt
The gray shaded dot represents a bucket you are lifting up. You apply a force of 25 N and the weight of the bucket is -10 N. Which vector is 25 N? Click in the correct dot.
Tags
NGSS.HS-PS2-1
2.
HOTSPOT QUESTION
2 mins • 1 pt
The gray shaded dot represents a bucket you are lifting up. You apply a force of 25 N and the weight of the bucket is -10 N. Which vector is -10 N? Click in the correct dot.
Answer explanation
Gravity always pulls down on masses and that force is their weight. Fg
I label down forces as negative in these problems.
Tags
NGSS.MS-PS2-2
3.
HOTSPOT QUESTION
2 mins • 1 pt
The gray shaded dot represents a bucket you are lifting up. You apply a force of 25 N and the weight of the bucket is -10 N. Which dot is by the correct net force on the bucket? Click in the correct dot.
Answer explanation
To find net force, you add the up and down forces together.
Net force = 25 N + - 10 N = 25 N - 10 N = 15 N
Tags
NGSS.MS-PS2-2
4.
HOTSPOT QUESTION
2 mins • 1 pt
The gray shaded dot represents a bucket you are lifting up. You apply a force of 15 N and the weight of the bucket is -8 N. Which dot is by the correct net force on the bucket? Click in the correct dot.
Answer explanation
To find net force, you add the up and down forces together.
Net force = 15 N + - 8 N = 15 N - 8 N = 7 N
Tags
NGSS.MS-PS2-2
5.
HOTSPOT QUESTION
2 mins • 1 pt
The gray shaded dot represents a bucket you are lifting up. You apply a force of 20 N and the weight of the bucket is -5 N. Which dot is by the correct net force on the bucket? Click in the correct dot.
Answer explanation
To find net force, you add the up and down forces together.
Net force = 20 N + - 5 N = 20 N - 5 N = 15 N
Tags
NGSS.MS-PS2-2
6.
DRAG AND DROP QUESTION
2 mins • 1 pt
You lift a 2-kg bucket with a force of 40.4 N. The weight of the bucket is -19.6 N.
m (bucket) = (a) Fg (bucket) = (b) Force applied on bucket = (c)
Answer explanation
The force up is 40.4 and the force down is
-19.6 N.
Add these to get the net force.
40.4 + - 19.6 N = 40.4 - 19.6 = 20.8 N
To get net force, always add up to down and left to right.
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-4
7.
DRAG AND DROP QUESTION
2 mins • 1 pt
You lift a 3-kg bucket with a force of 50 N. The weight of the bucket is -29.4 N.
m (bucket) = (a) Fg (bucket) = (b) Force applied on bucket = (c)
Answer explanation
The force up is 40.4 and the force down is
-19.6 N.
Add these to get the net force.
40.4 + - 19.6 N = 40.4 - 19.6 = 20.8 N
To get net force, always add up to down and left to right.
Tags
NGSS.MS-PS2-2
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