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densk [106]
3 years ago
12

A box is sliding along a frictionless surface and gets to a ramp. Disregarding friction, how fast should the box be going on the

ground in order to slide up the ramp to a height of 2.5 meters, where it stops? (Use g = 9.8 m/s2.)
Physics
1 answer:
horsena [70]3 years ago
6 0

Answer:

7.0 m/s

Explanation: I just did it

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Nicolaus Copernicus was a Polish astronomer who is best known for the theory that the sun is near the center of the universe and
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8 N to the left , and 4 N to the right. Find the net force. Is this balanced?
alukav5142 [94]

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2 years ago
4. The flow of electric charge is know as
vredina [299]

Answer:

electrons

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The wedge and screw simple machines
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3 years ago
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.7 ✕ 104 kg and is subject to a friction f
MaRussiya [10]

To solve the problem it is necessary to apply the concepts related to Force of Friction and Tension between the two bodies.

In this way,

The total mass of the cars would be,

m_T = 25(7.7*10^4)Kg

m_T = 1.925*10^6Kg

Therefore the friction force at 29Km / h would be,

f=250v

f= 250*29Km/h

f = 250*29*(\frac{1000m}{1km})(\frac{1h}{3600s})

f = 2013.889N

In this way the tension exerts between first car and locomotive is,

T=m_Ta+f

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6 0
3 years ago
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