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34kurt
4 years ago
11

If you push down a table with a force of 5 newtons, what is the normal force pushing back on you

Physics
1 answer:
marishachu [46]4 years ago
4 0

5 newtons is the answer


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Read 2 more answers
How much work is done in accelerating a 2000 kg car from rest to a speed of 30 m/s?
Otrada [13]
The work done is the same as the amount of energy increase. The formula for kinetic energy is 122
1
2
m
v
2
.

The initial KE of the car is 12(1000)×202=200,000
1
2
(
1000
)
×
20
2
=
200
,
000
joules.

The final KE of the car is 12(1000)×302=450,000
1
2
(
1000
)
×
30
2
=
450
,
000
joules.

The difference between these is the amount of work done: 450,000−200,000=250,000
450
,
000
−
200
,
000
=
250
,
000
joules.
14.2K viewsView upvotes

20



3
8 0
3 years ago
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