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Crazy boy [7]
3 years ago
14

A boy picks up a bowling ball. Which of the following choices correctly describes the interaction between the boy and the bowlin

g ball? A. The boy exerts an upward force on the ball, and the bowling ball exerts a downward force on the boy. B. Both forces are equal in strength. The boy exerts an upward force on the bowling ball, and the bowling ball exerts a downward force on the boy. C. The bowling ball’s force on the boy is the greater force. The boy exerts an upward force on the bowling ball because the ball accelerates. D. The bowling ball does not exert a force on the boy because the boy does not accelerate. E. The boy exerts an upward force on the bowling ball, and the bowling ball exerts a downward force on the boy. F. The boy’s force on the bowling ball is the greater force.
Physics
2 answers:
irakobra [83]3 years ago
8 0

A, E, and F are all true.

(A and E say the same thing.)

F explains why the ball accelerates upward.

Hatshy [7]3 years ago
5 0

Answer: F

Explanation: The boy is controlling the bowling ball therefore he can use greater force

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A force of 85 N is used to push a box along the floor a distance of 15 m. How much work was done?
denpristay [2]

Answer:

1275J

Explanation:

Given parameters:

Force on box  = 85N

Distance moved  = 15m

Unknown:

Work done  = ?

Solution:

Work done is the amount of force applied on a body to move it through a specific distance.

 Work done  = Force x distance

Now insert the parameters and solve;

 Work done = 85 x 15  = 1275J

4 0
3 years ago
Read 2 more answers
A projectile is fired with an initial velocity of 120.0 meters per second at an angle, θ above the horizontal. If the projectile
k0ka [10]

Answer:

θ = 62.72°

Explanation:

The projectile describes a parabolic path:

The parabolic movement results from the composition of a uniform rectilinear motion (horizontal ) and a uniformly accelerated rectilinear motion of upward or downward motion (vertical ).

The equation of uniform rectilinear motion (horizontal ) for the x axis is :

x = x₀+ vx*t   Formula (1)

vx = v₀x

Where:  

x: horizontal position in meters (m)

x₀: initial horizontal position in meters (m)

t : time (s)

vx: horizontal velocity  in m/s

v₀x: Initial speed in x  in m/s

The equations of uniformly accelerated rectilinear motion of upward (vertical ) for the y axis  are:

y= y₀+(v₀y)*t - (1/2)*g*t² Formula (2)

vfy= v₀y -gt Formula (3)

Where:  

y: vertical position in meters (m)  

y₀ : initial vertical position in meters (m)  

t : time in seconds (s)

v₀y: initial  vertical velocity  in m/s  

vfy: final  vertical velocity  in m/s  

g: acceleration due to gravity in m/s²

Data

v₀ = 120 m/s  , at an angle  θ above the horizontal

v₀x= 55 m/s

x-y components of the initial  velocity ( v₀)

v₀x = v₀*cosθ Equation (1)

v₀y = v₀*sinθ   Equation (2)

Calculating of the angle θ

We replace data in the  Equation (1)

55 =  120*cosθ

cosθ = 55 / 120

\theta = cos^{-1}(  \frac{55}{120} )

θ = 62.72°

3 0
3 years ago
How would you describe the behavior of particles in a solid?
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How would you describe the behavior of particles in a solid?
4 0
3 years ago
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Which result occurs during an exothermic reaction?
Irina-Kira [14]

In exothermic reactions, heat and light are released to the surrounding environment. On the other hand, in an endothermic reaction, heat is required and therefore it can be considered as a reactant.

  • In exothermic reactions, light and heat are released into the environment (Option D).

  • Exothermic reactions release energy in the form of heat or light.

  • Combustion reactions are generally exothermic reactions.

  • After an exothermic reaction takes place it is possible to observe that the energy of the products of the reaction is lesser than the energy of the reactants.

  • The energy released in exothermic reactions is evidenced by the increase in temperature of the reaction.

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2 years ago
What is the acceleration of a 24 kg mass pushed by a 6N force?
olga nikolaevna [1]
0.25 m/s squared

hope this helps x
7 0
3 years ago
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