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Jobisdone [24]
3 years ago
10

Which of the following are examples of projectile motion?

Physics
2 answers:
denis-greek [22]3 years ago
8 0

Answer:

A or C    I would pick C

Explanation:

astraxan [27]3 years ago
6 0

Answer: A and C

Explanation:

Just answered it on the apex quiz

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I DO NOT WANT LINKES OR …………..
il63 [147K]

1st B is correct option

2nd D is correct option

4 0
2 years ago
Read 2 more answers
A fisherman is fishing from a bridge and is using a "44.0-N test line." In other words, the line will sustain a maximum force of
avanturin [10]

Answer:

(a) W= 44N

(b)W= 31.65 N

Explanation:

Data

T=44 N : Maximum force that the rope can withstand without breaking

Newton's second law:

∑F = m*a Formula (1)

∑F : algebraic sum of the forces in Newton (N)

m : mass in kilograms (kg)

a : acceleration in meters over second square (m/s²)

(a)  We apply the formula (1) at constant speed , then, a=0

W: heaviest fish that can be pulled up vertically

∑F = 0

T-W =0  

W = T

W= 44N

(b)  We apply the formula (1) , a= 1.26 m/s²

W: heaviest fish that can be pulled up vertically

W= m*g

m= W/g

g= 9.8 m/s² : acceleration due to gravity

∑F = 0

T-W = m*a

T= W+(W/g)*a

44=W*(1+1/9.8)* (1.26 )

44= W* 1.39

W= 44/1.39

W= 31.65 N

7 0
3 years ago
A proton is released from rest at the origin in a uniform electric field in the positive x direction with magnitude 850 N/C. Wha
Gwar [14]

A proton is released from rest at the origin in a uniform electric field in the positive x direction with magnitude 850 N/C. The change in the electric potential energy of the proton-field system when the proton travels to x = 2.50m is -3.40 × 10⁻¹⁶ J (Option B)

<h3 /><h3>How is the change in electric potential energy of the proton-field system calculated?</h3>

  • Work done on the proton =Negative of the change in the electric potential energy of the proton field
  • In the given case, W = -qΔV
  • -W = qΔV
  • = qEcosθ
  • Therefore, work done on the proton = -e(8.50×10^2 N/C)(2.5m)(1)
  • = -3.40×10^-^1^6 J
  • Any change in the potential energy indicates the work done by the proton.
  • Therefore the positive sign shows that the potential energy increases when the proton does the work.
  • The negative sign shows that the potential energy decreases when the proton does the work.

To learn more about electric potential energy, refer

brainly.com/question/14306881

#SPJ4

3 0
1 year ago
I throw a ball off the edge of a 15.0m cliff. If I threw it horizontally at 8.0 m/s, how much time did it take to fall?
pickupchik [31]
Just ignore the horizontal component 

if you have a vertical displacement of 15m, 0ms^1 initial velocity, end velocity is ignored, we know the acceleration due to gravity as 9.81ms^2 so we can work out the time using SUVAT

S=15
U=0
V=?
A=9.81
T=?

S=UT + 0.5 AT^2

UT=0

therefore,

S=0.5AT^2

rearrange to:

T=SQR (2S/A)

T = 1.75 seconds
 


3 0
3 years ago
What is the force of gravity between two 3.0 kg masses 1.0 m apart?
gavmur [86]

m₁ = mass of the first object = 3.0 kg

m₂ = mass of the second object = 3.0 kg

r = distance between the first and second object = 1.0 m

G = universal gravitational constant = 6.67 x 10⁻¹¹ N m²/kg²

F = force of gravity between the two objects = ?

according to law of gravitation, force of attraction "F" between two objects m₁ and m₂, placed distance "r" apart is given as

F = G m₁ m₂/r²

inserting the values

F = (6.67 x 10⁻¹¹) (3.0) (3.0)/(1.0)²

F = (6.67 x 10⁻¹¹) (9.0)

F = 60.03 x 10⁻¹¹ N

F = 6.003 x 10⁻¹⁰ N

6 0
2 years ago
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