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Dafna11 [192]
3 years ago
11

A ball is thrown at a 60.0° angle above the horizontal across level ground. It is released from a

Physics
1 answer:
yawa3891 [41]3 years ago
6 0
Write out what you have which is:
initial velocity 
final velocity 
Y distance 
degree

You do not have :
a
X distance 
t

from what you have you can plug into your formulas to get time.
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The s.I unit of R so that the equation velocity= R × density S dimensionally correct R is a constant
Leviafan [203]

Answer:

R = m⁴/kg . s

Explanation:

In this case, the best way to solve this is working with the units in the expression.

The units of velocity (V) are m/s

The units of density (d) are kg/m³

And R is a constant

If the expression is:

V = R * d

Replacing the units and solving for R we have

m/s = kg/m³ * R

m * m³ / s = kg * R

R = m * m³ / kg . s

<h2>R = m⁴ / kg . s</h2>

This should be the units of R

Hope this helps

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2 years ago
In this closed system, a dog has sprinted to the top of a cliff. The dog (mass of 25kg) had been sprinting with a velocity of 13
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2 years ago
Carmen is helping load furniture and boxes onto a moving truck. She
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What is the first step in wind formation?
sineoko [7]

Warm air expands and rises up while cold air condenses and sinks.

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5 0
3 years ago
A Porsche challenges a Honda to a 400-m race. Because the Porsche's acceleration of 3.5 m/s² is larger than the Honda's 3.0 m/s²
GarryVolchara [31]

Answer: The Porsche Wins. Arrives 19secs earlier before the Honda.

Explanation: The head start of 1secs corresponded with the difference in acceleration {3.5m/s² - 3m/s²}=0.5m/s²

Using the first equation of motion we obtain the velocity which correspond to this acceleration (0.5m/s²) and time of 1secs where initial velocity u = 0

V = u + at

V= 0 + at

V = 0.5 * 1 = 0.5m/s

Now let find the velocity of each of the car.

If V. a

0.5m/s 0.5m/s²

........m/s. 3.5m/s²

Velocity of porche Vp

= (3.5/0.5) * 0.5 = 3.5 m/s

Also if. V. a

0.5m/s. 0.5m/s²

.....m/s. 3 m/s²

Velocity of Honda Vh

= {3/0.5} * 0.5 = 3m/s

So let's find the time t taken by both cars to cover the distance of 400m

Recall,

Velocity = distance/time

Time t = distance/velocity

For Porche, t = 400/3.5 =114.29secs

For Honda, t = 400/3 = 133.33secs

Looking critically, we noticed that Porche car took shorter time.

The difference In time is

= (133.33 - 114.29)secs = 19.04secs

3 0
3 years ago
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