3 years ago

Can someone please help me in physical science

Physics

1 answer:

Sonbull [250]3 years ago

7 0

Filling in a table with the changes and measured data values (c)

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PLS HELP How much power is used if an athlete lives a 100n Weight up 5m in 20 seconds

BlackZzzverrR [31]

Answer:

25J

Explanation:

power = work done ÷ time taken.

and work done = force applied × distance covered.

according to the question, the athlete lifts the weight of 100N upto 5m therefore;

100N × 5m = 500N/m

then onwards,

the work done (500 N/m) should be divided by the time taken to calculate the power,

500 ÷ 20s = 25J

is your answer.

hope this helped. :)

8 0

3 years ago

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Which is the best description of a high pressure system?

ruslelena [56]

Answer:

The Answer is gonna be B.

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3 years ago

A ball is thro.d hit the grouvelocity)?

kati45 [8]

Answer:

The velocity of the ball is 3.52 m/s.

Explanation:

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Given that the ball was thrown vertically upward on the top of a skyscraper of height 61.9 m. So that the velocity can be determined by;

u = $\sqrt{\frac{2H}{g} }$

Where: u is the velocity of the object, H is the height and g is the gravitational force on the object. Given that: H = 61.9 m and g = 10 m/ $s^{2}$ , then;