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lara [203]
3 years ago
5

Ann is driving down a street at 64 km/h.

Physics
2 answers:
aksik [14]3 years ago
8 0

Answer:

13.5 m

Explanation:

First, convert km/h to m/s:

64 km/h × (1000 m / km) × (1 h / 3600 s) = 17.8 m/s

Distance = rate × time

d = 17.8 m/s × 0.761 s

d = 13.5 m

Kobotan [32]3 years ago
6 0

Answer:

13.5 m

Explanation:

64 km * 1000 m/km

-----------------------

1 hr * 3600 s/hr

= 17.8 m/s

d = vt

= (17.8 m/s)(0.761 s)

= 13.5 m

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Explanation:

1. Force applied on an object is given by :

F = W = mg

(a) A 160 lb human being, F = 160 lb

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m=\dfrac{160\ lb}{32\ ft/s^2}

m = 5 kg

(b) A 1.9 lb cockatoo, F = 1.9 lb

m=\dfrac{F}{g}

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m = 0.059 kg

2. (a) A 2300 kg rhinoceros, m = 2300 kg

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W=0.022\ kg\times 32\ ft/s^2=0.704\ lb

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5 0
3 years ago
Against the park ranger's advice, a visitor at a national park throws a stone horizontally off the edge of a 86 m high cliff and
Drupady [299]

The initial horizontal velocity of the rock, in m/s is 21.241 m/s.

<h3>What is projectile?</h3>

When an object is thrown at an angle from the horizontal direction, the object is said to be in projectile motion. The object which follows the projectile motion.

Time taken by the stone to reach the ground is

t = √2h/g

t = √(2x 86)/9.81

t = 4.19s


The horizontal velocity is

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Put the values, we get

V(x) = 89 m/4.19 s

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Thus, the horizontal velocity is 21.241 m/s

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4 0
2 years ago
A group of hikers hear an echo 2.6 s after they shout. The temperature is 20 ◦C. How far away is the mountain that reflected the
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Answer:

x = 445.9\,m

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2\cdot x = v_{air}\cdot \Delta t

x = \frac{v_{air}\cdot \Delta t}{2}

x = \frac{(343\,\frac{m}{s} )\cdot (2.6\,s)}{2}

x = 445.9\,m

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3 years ago
a 2 kg rabbit starts from rest and its moving at 6 m/s after 3 seconds . what force must the rabbit cause to makes this change i
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