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3 years ago

How do icebergs form

Physics

1 answer:

pishuonlain [190]3 years ago

5 0

Answer:

They break off large ice sheets found at the North and South poles.

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A runner taking part in the 200-m dash must run around the end of a track that has a circular arc with a radius of curvature of

Leto [7]

Answer: $2.27\ m/s^2$

Explanation:

Given

Length of the race track $L=200\ m$

the radius of curvature of the track $r=29.5\ m$

time taken to run on track is $t=24.4\ s$

Speed of runner is

$\Rightarrow v=\dfrac{L}{t}=\dfrac{200}{24.4}\\\\\Rightarrow v=8.196\ m/s$

Centripetal acceleration is

$\Rightarrow a_c=\dfrac{v^2}{r}=\dfrac{8.196^2}{29.5}\\\\\Rightarrow a_c=2.27\ m/s^2$

5 0

3 years ago

What's the hikers average velocity during part D of the hike?

Vikki [24]

your answer is D. 8km/h west please mark me brainliest and ask for help if you have any more problems

6 0

3 years ago

A dog mass with 14 kg has a kinetic energy of 135.5 J.What is the speed of the dog?

Fantom [35]

Your answer is 4.4 m/s :D

3 0

3 years ago

Read 2 more answers

Every few years, Earth passes through Saturn’s rings.

creativ13 [48]

Answer:

Fales its impossibke bc they r so far apart

Explanation:

3 0

3 years ago

player passes a 0.6 kg basketball downcourt for a fast break. The ball leaves the player's hands with a speed of 9 m/s and slows

MrMuchimi

Complete Question

player passes a 0.6 kg basketball downcourt for a fast break. The ball leaves the player's hands with a speed of 9 m/s and slows down to 5.4 m/s at its highest point.

a.) How high (above the release point) is the ball when it is at its maximum height

b) How would doubling the ball's mass affect the result in part (a)?

Answer:

a The maximum height is $s =2.64m$

b The mass would not effect the height because by making s the subject in the equation of motion

$s = \frac{v^2 -u^2}{2g}$

We see that it is not dependent on mass

Explanation:

From the question we are told that

The mass of the baseball is $m_b = 0.6kg$

The speed it leave hands is $v_h = 9m/s$

The speed it slow down to is $v_s = 5.4m/s$

According to the law of motion

$v_s^2 = v_h^2 + 2as$

Now a is the acceleration and in this question is the acceleration due to gravity denoted as $-g$ the negative sign shows that it is moving against gravitational force