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kondor19780726 [428]
3 years ago
13

A car travels 85 km in the first half hour of a trip. The car continues to travel for 2 more hours and travels 200 km. What was

the average speed of the car for the trip?
Physics
1 answer:
viva [34]3 years ago
3 0

Answer:

50

Explanation:

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A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of
solmaris [256]

Answer:

0.57 ms^{-1}

Explanation:

k = spring constant of the spring = 40 Nm⁻¹

A = amplitude of the simple harmonic motion = 4 cm = 0.04 m

m = mass of the block attached to spring = 0.20 kg

w = angular frequency of the simple harmonic motion

Angular frequency of the simple harmonic motion is given as w = \sqrt{\frac{k}{m} } \\w = \sqrt{\frac{40}{0.20} }\\w = 14.14 rads^{-1}

v = Speed of the block as it pass the equilibrium point

Speed of the block as it pass the equilibrium point is given as

v = A w\\v = (0.04) (14.14)\\v = 0.57 ms^{-1}

6 0
3 years ago
A 1800 kg car is accelerated at 2.6m/s^2 what force was needed to produce this acceleration
nataly862011 [7]

Answer:

4680 N

Explanation:

Force =mass x acceleration

Mass =1800kg

Acceleration =2.6m/s ^2

Hence Force = 1800kg x 2.6m/s

= 4680N

7 0
3 years ago
In which one or more of the following is the earth assumed to be the center of the universe?
sladkih [1.3K]
Can you put the answers, if there are any?
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4 0
3 years ago
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A particle moving on a circle has a velocity of 5 m/s and a normal acceleration of 10 m/s^2. What is the radius of the circle?
dybincka [34]

Answer:

Radius of the circle will be 2.5 m

Explanation:

We have given velocity of particle moving in the circle v = 5 m/sec

Acceleration of particle in the circle a=10m/sec^2

We have to find the radius of the circle

We know that acceleration is given by a=\frac{v^2}{r}

So 10=\frac{5^2}{r}

r=\frac{25}{10}=2.5m

So radius of the circle will be 2.5 m

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3 years ago
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3 years ago
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