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AlexFokin [52]
3 years ago
8

As Clinton walks he pushes his shoe against the track.

Physics
1 answer:
Valentin [98]3 years ago
4 0

Answer:A:The track pushes back on Clinton's shoe with the same force.

Explanation:According to Newton's third law of motion, for every action force there is an equal and opposite reaction force. In this case, the action force is Clinton's shoe pushing on the track. As this happens, there is an equal and opposite reaction force in which the track pushes back on Clinton's shoe with the same force.

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A body is thrown up with a velocity of 78.4 m per second.How high will it rise and how much time it will take to return to its p
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Answer:

The maximum height reached by the body is 313.6 m

The time to return to its point of projection is 8 s.

Explanation:

Given;

initial velocity of the body, u = 78.4 m/s

at maximum height (h) the final velocity of the body (v) = 0

The following equation is applied to determine the maximum height reached by the body;

v² = u² - 2gh

0 = u² - 2gh

2gh = u²

h = u²/2g

h = (78.4²) / (2 x 9.8)

h = 313.6 m

The time to return to its point of projection is calculated as follows;

at maximum height, the final velocity becomes the initial velocity = 0

h = v + ¹/₂gt²

h = 0 + ¹/₂gt²

h =  ¹/₂gt²

2h = gt²

t² = 2h/g

t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 313.6}{9.8} }\\\\t = 8 \ s

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3 years ago
Does a basketball, baseball, tennis ball, or marble MOST LIKELY have the smallest volume?
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3 years ago
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A thermal insulator separates a warm liquid from a cold liquid. Neglecting the effects of the environment, how will the warm liq
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2.08
natka813 [3]

Calculate its average speed in meters per second

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5.77 m/s

Explanation:

Speed= Distance/Time

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Average speed= 60/10.4=5.769230769  m/s

Approximately, the average speed is 5.77 m/s

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