3 years ago

Forces can be: A. Pushes only B. Pulls only C. Pushes and pulls

Physics

1 answer:

Ludmilka [50]3 years ago

7 0

Answer:

Explanation:

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2 years ago

Jason and Guy are throwing watermelons straight up from the ground. (They’re making fruit salad.) Jason throws his watermelon at

NISA [10]

Answer:2t

Explanation:

Given

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$v_f=u_i+at'$

0=v-gt'

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and time to reach bottom is also t'

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4 years ago

You name binary ionic compounds by naming the first element or the ___ first,

Nuetrik [128]

Answer:

cation, anion

Explanation:

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example:

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4 years ago

An athlete performing a long jump leaves the ground at a 32.9 ∘ angle and lands 7.78 m away.part a )what was the takeoff speed ?

MatroZZZ [7]

Answer:

Explanation:

Given

Inclination $\theta =32.9^{\circ}$

Distance of landing point $R=7.78\ m$

Considering athlete to be an Projectile

range of projectile is given by

$R=\frac{u^2\sin 2\theta }{g}$

where u=launch velocity

$7.78=\frac{u^2\sin (2\times 32.9)}{9.8}$

$u^2=83.58$

$u=\sqrt{83.58}$

$u=9.142\ m/s$

(b)If u is increased by 8% then

new velocity is $u'=9.87\ m/s$

$R'=\frac{u'^2\sin 2\theta }{g}$

$R'=9.07\ m$

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4 years ago

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