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Gnom [1K]
3 years ago
9

A soccer ball is rolling across a soccer field. The system consists of the

Physics
1 answer:
neonofarm [45]3 years ago
5 0

Answer:

NEGATIVE

Explanation:

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how fast would a(n) 73 kgkg man need to run in order to have the same kinetic energy as an 8.0 gg bullet fired at 430 m/sm/s ?
Mars2501 [29]

Answer:

an 85 kg person run to equal the kinetic energy of an 8.0 g bullet fired at 410 m/s? The speed is, it might be argued,

v=4.0m/s

Explanation:

Typically, the mathematical formula for kinetic energy is as follows:

KE=\frac{1}{2} *m*v^{2}

K.E= kinetic energy

M=mass

V= speed

so,

KE=1/2*0.008*(420)*420

K.E=672.4J

 Therefore,

v*v=672.4/85

v*v=15.821

v=4.0m/s

Therefore

v=4.0m/s

What is Kinetic Energy?

The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

To know more about Kinetic Energy? Visit to: -

brainly.com/question/22174271

#SPJ4

8 0
1 year ago
A 0.040kg block of of copper at 95℃ is placed in 0.105kg of water at an unknown temperature. After equilibrium is reached, the f
Rainbow [258]

Answer:

Explanation:

heat lost by block of copper

= mass x specific heat x fall in temperature

= .04 x 385 x ( 95 - 24 )

= 1093.4 J

Heat gained by water

= .105 x 4200 x ( 24 - T ) ;  Here T is initial temperature of water .

= 441 ( 24 - T )

heat lost = heat gained

1093.4 = 441 ( 24 - T )

24 - T = 2.48

T = 21.52 ℃

3 0
3 years ago
Carter pushes a bag full of basketball jerseys across the gym floor. The he pushes with a constant force of 21 newtons. If he pu
vlada-n [284]
By definition, the power is given by:
 P =  \frac{F*d}{t}
 Where,
 F: Force
 d: distance traveled
 t: time
 The power units is watts.
 Substituting values we have:
 P = \frac{21*9}{3}
 Making the corresponding calculations we have: P = 63 watts
 Answer:
 
he uses 63 watts of power:
 
P = 63 watts
5 0
3 years ago
Read 2 more answers
Convex mirror is used as a rear view mirror in vehicles why give reasons<br>​
KiRa [710]

Answer: We prefer a convex mirror as a rear-view mirror in vehicles because it gives a wider field of view, which allows the driver to see most of the traffic behind him. Convex mirrors always form a virtual, erect, and diminished image of the objects placed in front of it.

8 0
3 years ago
Thad needs to seek mental health care because he is experiencing intense anxiety which of the following providers is Least quali
Kisachek [45]

Answer:

psychologist

Explanation:

8 0
3 years ago
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