8.b yes
9.c Huh? 21/21 = 1
10.a I do not think so. She, not the wheelbarrow, supplied the work.
If it weighed 35 N and she lifted it 2.5 meters, then D would be correct.
The problem is poorly written. It is not clear if the force is in the direction of motion.
Ms. Sue please help.
8. Which would best reduce the amount of energy needed to pull a wagon up a ramp? (1 point)
increasing the slope of the ramp
reducing the friction between the wagon wheels
reducing the length of the wagon handle
increasing the friction between the wagon wheels
9. To lift a load to the roof, you apply 21 N of force to a pulley. The pulley applies 21 N of force to the load. What is the mechanical advantage of the pulley? (1 point)
0
1
40
21
10. Carla applied a force of 35 N to a wheelbarrow full of bricks and moved it 2.5 m. Which of the following can be determined from this information? (1 point)
The wheelbarrow supplied 87.5 J of work.
The wheelbarrow has a mechanical advantage of 14.
The wheelbarrow is 7 percent efficient.
The wheelbarrow has 87.5 J of potential energy.
my answers
8.b
9.c
10.a
17 answers
CA Unit 2 Lesson 4
Gravitational Potential Energy
1)B
2)A
3)D
4)B
5)C
6)A
7)D
8)B
9)B
10)A
Gravitational Potential Energy
1)B
2)A
3)D
4)B
5)C
6)A
7)D
8)B
9)B
10)A
8.B
9.C
9.C
Are they right?
No they are wrong only 8/10 :(
B
A
D
B
C
A
D
B
B
A
A
D
B
C
A
D
B
B
A
Do you have the right answers?
Taylor and anon are correct
oh ok I will try them
Is it for unit 2 or 3?
They are correct and it is for unit 3. For 8th grade science.
THANK YOU SO MUCH! TAYLOR IS CORRECT YES FINALLY SO SO GREATFUL!!!!!!!!!! :D
Taylor is 100% correct. Just be sure to answer with all her answers correctly!!
Does this work for 6th grade science as well because the questions are the same
Thank you so much Taylor is a 100% correct
So is Taylor correct with her answers? It’s only 1-10. It’s the same for me but 1-11 for 6th grade science same questions pls help
Mine says the responses are saved but i have a good feeling abou the answers. Tysm.
1 answer