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kherson [118]
3 years ago
12

You're driving at 50 mph and then speed up to 70 mph. how much more "force" does the engine in your car have to produce to maint

ain the new speed (as compared to the force at 50 mph)? explain.
Physics
1 answer:
Fittoniya [83]3 years ago
6 0
You drove 20 more mph than what you did before. The more force is 20 because you drove 20 more mph.
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To lift a load of 100 kg a distance of 1 m an effort of 25 kg must be applied over an inclined plane of length 4 m. What must be
Troyanec [42]
Using conservation of energy law:-
∑ work in = ∑ work out
and work= force* displacement 
so when we wanted to move a 100kg a distance of 1m 
we multiplied 100*1 = work out
so work in should be equal to 100*g Joules, where g is the acceleration due to gravity.
so workout = 100*g = 25*g *x (divide both sides by 25*g)
x=4m 

by the same way:-
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work in = 100kg * 2m * g (m/s^2)= work out
so work out = 25*x*g = 200* g (divide both sides by 25*g)
x=8m
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Answer:

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3 years ago
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Please help me with this...<br>And Show all steps correctly​
ipn [44]

Answer:

4 m

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From the question given above, the following data were obtained:

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The displacement of the object can be obtained as follow:

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s = 20 + (–16)

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