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3 years ago

A student is riding his skateboard . He heads west 33.6 miles in 3 hours. What is his velocity?

Physics

1 answer:

Stells [14]3 years ago

4 0

Answer:

11.2 mph

Explanation:

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A Porsche challenges a Honda to a 200-m race.Because the Porsche's acceleration of 3.5 m/s2 is larger than the Honda's 3.0 m/s2,

Blizzard [7]

Answer:

Honda won by 0.14 s

Explanation:

We are given that

Distance =S=200 m

Initial velocity of Honda=u=0m/s

Initial velocity of Porsche=u'=0m/s

Acceleration of Honda= $3.0m/s^2$

Acceleration of Porsche's= $3.5m/s^2$

Time taken by Honda to start=1 s

$s=ut+\frac{1}{2}at^2$

Substitute the values

$200=0(t)+\frac{1}{2}(3)t^2$

$200=\frac{3}{2}t^2$

$t^2=\frac{200\times 2}{3}=\frac{400}{3}$

$t=\sqrt{\frac{400}{3}}=11.55s$

Time taken by Honda=11.55 s

Now, time taken by Porsche

$200=\frac{1}{2}(3.5)t^2$

$t^2=\frac{200\times 2}{3.5}$

$t=\sqrt{\frac{400}{3.5}}=10.69 s$

Total time taken by Porsche=10.69+1=11.69 s

Because it start 1 s late

Time taken by Honda is less than Porsche .Therefore, Honda won and

Time =11.69-11.55=0.14 s

Honda won by 0.14 s

3 0

3 years ago

4 meters to the left 9 meters to the right 5 meters to the left and 3 meters to the right this all took 10 seconds and is the sp

marshall27 [118]

Same speed for same ratio

3 0

3 years ago

A 15 000-N car on a hydraulic lift rests on a cylinder with a piston of radius 0.20 m. If a connecting cylinder with a piston of

victus00 [196]

Answer:

the force applied to the smaller piston is 600 N

Explanation:

Given;

weight of the car, F = 15,000 N

radius of the lager piston, R = 0.2 m

radius of the smaller piston, r = 0.04 m

let the force applied to the smaller piston = f

The pressure applied on both piston is constant;

$P = \frac{F}{A} = \frac{f}{a} \\\\\frac{F}{R^2} = \frac{f}{r^2} \\\\f = \frac{F\times r^2}{R^2} = \frac{15,000 \times (0.04)^2}{(0.2)^2} = 600 \ N$

Therefore, the force applied to the smaller piston is 600 N

5 0

3 years ago

A power supply is connected to a 59 Ohm resistor and a 53 Ohm resistor in series. The total current is found to be 0.15 A. What

kirill [66]

the answer is 47265.dug

Explanation:

im bot sure

4 0

2 years ago

Which of these objects has the largest volume?

motikmotik

Answer:

The balloon

Explanation:

Since there are 100 cm or 1000 mm in a meter, you can rewrite the dimensions in the following way:

A cube of metal with a volume of 10,000 mm^3

A spherical balloon with a volume of 50,000,000 mm^3

A sample of water with a volume of 1,000 mm^3

Therefore, the balloon clearly has the most volume. Hope this helps!

3 0

3 years ago

Read 2 more answers