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Andrej [43]
3 years ago
15

Consider the train car described in the previous part. Another experiment is conducted in it: A net force of 20N is applied to a

n object of mass 5kg. Can you determine the acceleration of the object with respect to the train, and, if so, what is its value?
Physics
1 answer:
nordsb [41]3 years ago
7 0

Answer:

No

Explanation:

The supplied information about the object and train is incomplete. Acceleration is the rate at which the velocity of a body changes with time. Here the velocity and time is not given

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Elements that are made from only one type of atom

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According to newtos first law of motion. what is required to make a object slow down.
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Friction

Explanation:

Friction is a force that slows down moving objects. If you roll a ball across a shaggy rug, you can see that there are lumps and bumps in the rug that make the ball slow down. The rubbing, or friction, between the ball and the rug is what makes the ball stop rolling. External Force is required.

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If a longitudinal wave passes a specific point seven times per second, and the distance between wave rarefaction points is 2 met
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Answer: 14 m/s

Explanation:

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3 years ago
From the 1780s to the late 1800s, people thought the amount of land and resources in the West was limited
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3 years ago
What is the sprinters output at 2.0 s, 4.0 s and 6.0 s?
kari74 [83]

A 59 kg sprinter, starting from rest, runs 47 m in 7.0 s at constant acceleration.?  

What is the sprinter's power output at 2.0 s, 4.0 s, and 6.0 s?  

Instantaneous Power is the force times velocity  

P = Fv  

Because the acceleration is constant, the force will be constant as well  

F = ma  

P = mav  

for constant acceleration, the velocity at each time is found using  

v = at  

P = ma(at) = ma²t  

find the acceleration using kinematic equation  

s = ½at²  

a = 2s/t²  

a = 2(47) / 7.0²  

a = 1.918 m/s²  

P(2.0) = 59(1.918²)2.0 = 434.25 W = 0.43 kW  

P(4.0) = 59(1.918²)4.0 = 868.51 W = 0.87 kW  

P(6.0) = 59(1.918²)6.0 = 1302.76 W = 1.3 kW  

I hope this helped.  


5 0
3 years ago
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