3 years ago

A basketball player pushes down with a force of 34 N on a basketball that is inflated

Physics

1 answer:

zloy xaker [14]3 years ago

8 0

Answer:

2.2 cm

Explanation:

Pressure = force / area

P = F / A

A = F / P

A = 34 N / (9×10⁴ Pa)

A = 0.000378 m²

Area of a circle is:

A = πr²

0.000378 m² = πr²

r = 0.011 m

Diameter is double the radius:

d = 2r

d = 0.022 m

d = 2.2 cm

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Montano1993 [528]

Answer:

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b.90 km

Explanation:

We are given that

$v_1=89km/h$

$t_1=30min$

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$t_2=12min$

$v_3=40km/h$

$t_3=45 min$

Time spend on eating lunch and buying ga=15 min.

a.Total time=30+12+45+15=102 minute= $\frac{102}{60}=1.7 hour$

1 hour=60 minutes

Distance= $speed\times time$

$d_1=v_1\times t_1=80\times\frac{30}{60}=40km$

$d_2=100\times \frac{12}{60}=20 km$

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Total distance= $d_1+d_2+d_3=40+20+30=90km$

Average speed= $\frac{total\;speed}{total\;time}$

Using the formula

Average speed= $\frac{90}{1.7}=52.9Km/h$

b.Total distance between the initial and final city lies along the route=90 km

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3 years ago

Scalars are used to solve projectile motion problems because they allow the analysis of one direction at a time for two-dimensio

Korolek [52]

The statement is false. Vectors are used to solve projectile motion problems because they allow the analysis of one direction at a time for two-dimensional motion. Scalar quantities can be used to analyze linear motion problem, but not projectile motion.

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I. The spring does work on the box from the moment the box first hits the spring to the moment the spring first reaches its maxi

nalin [4]

Answer:

Negative

Explanation:

If the box is heading right in the positive direction, the work will be negative. The spring has an opposite force to that of the box.

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Answer:

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Explanation:

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