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Hatshy [7]
3 years ago
13

If the force of a 10 kg car traveling in a circular path is 900n and the circle has a diameter of 20 m what is the velocity of t

he car
Physics
1 answer:
viktelen [127]3 years ago
3 0

Answer:

the velocity of the car is 30 m/s.

Explanation:

Given;

Centripetal force on the car, F = 900 N

mass of the car, m = 10 kg

diameter of the circular path, d = 20 m

radius of the circular path, r = 10 m

The velocity of the car is calculated as follows;

F = \frac{mv^2}{r} \\\\mv^2 = Fr\\\\v^2 = \frac{Fr}{m} \\\\v = \sqrt{\frac{900 \times 10}{10} } \\\\v = 30 \ m/s

Therefore, the velocity of the car is 30 m/s.

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4. A vehicle
Gnom [1K]

Answer:

Average acceleration, a=2.77\ m/s^2

Explanation:

Given that,

Initial velocity, u = 0 km/h

Final velocity, v = 100 km/h = 27.77 m/s

Time, t = 10 s

We need to find the average acceleration of the vehicle. It is given by the change in velocity divided by time. Som,

a=\dfrac{v-u}{t}\\\\a=\dfrac{27.77-0}{10}\\\\a=2.77\ m/s^2

So, its average acceleration is 2.77\ m/s^2.

5 0
4 years ago
Suppose you do work on an object from rest to a certain speed v. Why does it take four times the amount of work to increase its
Otrada [13]
Answer: it is due to friction.

Explanation: if you were to push an object that is at rest, there is static friction that you would first need to overcome. An example would be pushing a car as it is in neutral. Pushing it takes more force and work to overcome that friction.
But once it overcomes static, it will then turn to kinetic friction. Once the car starts to move, you notice that it is easier to push. This is due to the fact that kinetic friction would equal normal force times the constant while the static friction is greater than or equal to the normal force times the constant.

Hope this helps!!!
8 0
4 years ago
A train traveled 85 mph for 7 hours how far did it travel?
Sergio [31]

Answer:

12.1429 miles per hour

Explanation:

4 0
3 years ago
Read 2 more answers
How does the direction of current flow in the coil affect the orientation of the magnetic field produced by the electromagnet
Lynna [10]

Answer:

The magnetic field produced by an electric current is always oriented perpendicular to the direction of the current flow. And.Direction of magnetic field is governed by the 'right hand thumb rule, The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of Force . Similar to the situation with electric field lines, the greater the number of lines (or the closer they are together) in an area the stronger the magnetic field.

8 0
3 years ago
A 60m long train moving on a straight
Flura [38]

Explanation:

part 1.

s=60m

t=5s

v=s/t. =60/5 =12m/s

part 2

total s= 540+60. =600m

v=12m/s

t=s/v. =600/12 =50s

8 0
3 years ago
Read 2 more answers
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