3 years ago

Mary and Jane are standing at each end of an ice board 1.0 m in length. 2 points

Physics

1 answer:

madam [21]3 years ago

3 0

Answer:

0.053 m ang answer my phsiycal

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Can cars stop on a dime? Calculate the acceleration of a 1400 kg car if it can stop from 35 km/h on a dime (diameter= 1.7 cm) ho

Deffense [45]

Answer:

The acceleration of the cart is 283.54g

Explanation:

It is given that,

Initial speed of the car, u = 35 km/h = 9.72 m/s

Finally, it stops, v = 0

Diameter of the dime, d = 1.7 cm

Let a is the acceleration of the car. Using third equation of motion to find it as :

$v^2-u^2=2ad$

$-u^2=2ad$

$a=\dfrac{-u^2}{2d}$

$a=-\dfrac{(9.72)^2}{2\times 1.7\times 10^{-2}}$

$a=-2778.77\ m/s^2$

So, the acceleration of the car is $2778.77\ m/s^2$ and it is decelerating.

Since, $g=9.8\ m/s^2$

So, $a=\dfrac{2778.77}{9.8}=283.54\ g$

So, the acceleration of the cart is 283.54g. Hence, this is the required solution.

6 0

3 years ago

A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far is the boat traveled?

Lunna [17]

The answer is in attachment.

3 0

3 years ago

How to solve for resistors

valentinak56 [21]

9514 1404 393

Answer:

A1 = 3A, A2 = 1.5A

Effective resistance = 2Ω

Explanation:

When the switch is closed, the voltage across each resistor is 6V, so the current through it (A2) is ...

A2 = 6V/(4Ω) = 1.5A

There are two parallel paths, each with that current, so the current from the battery is ...

A1 = A2 +A2 = 1.5A +1.5A = 3.0A

Then the effective resistance is ...

Reff = 6V/(3.0A) = 2.0Ω

The solution to the circuit is ...

A1 = 3A, A2 = 1.5A

Effective resistance = 2Ω

6 0

3 years ago

How much force is exerted if a 250 kg object has an acceleration of 750 m/s2 ?

Andrew [12]

Use Newton’s second law: F=ma
m= 250kg. a= 750ms-2
F= 250 x 750 = 187 500N

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3 years ago

Read 2 more answers

9. Name the two different symbols used to store all digital data on microchips in binary code. Explain how only two options can

elena-s [515]

Answer:

it got me confused for a bit but then i realized the answer was 1 and 0

Explanation:

ever hear of the phrase 1011000001010101001010100100001001000111? yeah ap.ex is talking about that

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3 years ago