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HACTEHA [7]
3 years ago
7

Solve the problems here on the pic

Physics
2 answers:
Korvikt [17]3 years ago
4 0

Answer:30,3.33,300

Explanation:divide 15 by the decimal

Gekata [30.6K]3 years ago
4 0
30 is the answer to the problem
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The crate would slide forward
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A football player runs from his own goal line to the opposing team's goal line, returning to his forty-yard line, all in 22.4 s.
Bumek [7]
I assume L=120 yards as the length of the football field.

1) The average speed is given by the total distance covered by the player divided by the time taken.
The total distance covered to go from one goal line to the other and then back to the 40-yards line is
S=120y+(120-40)y=120y+80y=200 y
And the time taken is t=22.4 s, so the average speed of the player is
v= \frac{S}{t}= \frac{200 y}{22.4 s}=8.93 y/s

2) The find the average velocity, we should also consider the direction (and the sign) of the velocity.
In the the first part of the motion, the player goes from one goal line to the other one, so he covers 120 y. However, in the second part of the motion he goes back by 80 y. Therefore, the net displacement of the player is
S=120 y-80 y=40 y
and so, the average velocity is
v= \frac{S}{t}= \frac{40 y}{22.4 s}= 1.79 y/s
6 0
3 years ago
The location movement and intensity of precipitation can be found by using?
vaieri [72.5K]

<span>Answer: Doppler radar
Doppler radar or weather radar is used to locate precipitation,</span> forecast future intensity, calculate or detecting its motion and estimates precipitation whether it is a rain, snow, hail or storm. They are also helpful in determining the structure of storms and its potential to cause severe weather.

Moreover, if a portion of the atmosphere becomes saturated with water vapor, it will condense and precipitate allowing Doppler radar to analyze and observe precipitation.

4 0
3 years ago
a ball (mas .40) is initially moving to the left at 30m/s. After hitting the wall, the ball is moving to the right at 20 m/s. Wh
Step2247 [10]

Answer:

The impulse is -20kg m/s.

Explanation:

given mass of ball =  0.4 kg

The ball is moving towards left with the initial velocity = 30m/s

The momentum in left direction P1 = mv1

= (0.4)(30)

= 12 kg m/s

The given velocity towards right = -20 m/s ( negative sign shows inverse direction)

Momentum towards right, P2 = mv2

P2 = (0.4)(-20)

P2 = -8 kg m/s

The Impulse = change in momentum

= P2 –P1

= -8-12

= -20 kg m/s

6 0
3 years ago
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