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Debora [2.8K]
3 years ago
8

một hòn đá ném theo phương nằm ngang với vân tốc v0=15 m/s. tính gia tốc tiếp tuyến và gia tốc pháp tuyến của hòn đá sau lúc ném

1 giây.
Physics
1 answer:
Lady_Fox [76]3 years ago
5 0

Answer:

what language is this???

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Answer:

60-100

Explanation:

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HOPE THIS HELPS!!! HAVE A GREAT DAY!!!

7 0
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Match the following
Fofino [41]

Answer:

1. b

2. d

3. e

4. c

5. a

Explanation:

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How are wave properties and energy related?<br> give me examples
klasskru [66]

Answer:

They don’t ‘represent’ anything, they are properties of the wave.

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6 0
2 years ago
A spring is hung from the ceiling. A 0.442-kg block is then attached to the free end of the spring. When released from rest, the
siniylev [52]

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K=58.8N/m

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6 0
3 years ago
The parachute on a drag racing car deploys at the end of a run. If the car has a mass of 820 kg and the car is moving 36 m/s, wh
Lelechka [254]

In order to determine the required force to stop the car, proceed as follow:

Calculate the deceleration of the car, by using the following formula:

v^2=v^2_o-2ax

where,

v: final speed = 0m/s (the car stops)

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x: distance traveled = 980m

a: deceleration of the car= ?

Solve the equation above for a, replace the values of the other parameters and simplify:

\begin{gathered} a=\frac{v^2_o-v^2}{2x} \\ a=\frac{(36\frac{m}{s})^2-(0\frac{m}{s})^2}{2(980m)}=0.66\frac{m}{s^2} \end{gathered}

Next, consider that the formula for the force is:

F=ma

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Replace the previous values and simplify:

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Hence, the required force to stop the car is 542.20N

4 0
1 year ago
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