1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AURORKA [14]
3 years ago
8

If an object has a kinetic energy of 30 j and mass of 34kg how fast is the object moving ?

Physics
1 answer:
BartSMP [9]3 years ago
4 0
Since the formula for kinetic energy is:

Ek = (m*V^2) / 2 where m is mass and V is speed, then we can take this equation and manipulate it a little to isolate the speed.

Ek = mv^2 / 2 — multiply both sides by 2
2Ek = mv^2 — divide both sides by m
2Ek / m = V^2 — switch sides
V^2 = 2Ek / m — plug in values
V^2 = 2*30J / 34kg
V^2 = 60J/34kg
V^2 = 1.76 m/s — sqrt of both sides
V = sqrt(1.76)
V = 1.32m/s (roughly)
You might be interested in
Suppose that you are headed toward a plateau 4040 m high. If the angle of elevation to the top of the plateau is 2020degrees°​,
Lelu [443]

Answer :

The distance is 109.89 m.

Explanation :

Given that,

Height = 40 m

Angle = 20°

We need to calculate the base of the​ plateau

Using formula of angle

\tan\thata=\dfrac{h}{x}

Where, h = height

x = base

\theta = angle

Put the value into the formula

\tan20^{\circ}=\dfrac{40}{x}

x=\dfrac{40}{tan20^{\circ}}

x =109.89\ m

Hence, The distance is 109.89 m.

3 0
3 years ago
Which of the following statements about electric field lines associated with electric charges is false? Electric field lines can
Tcecarenko [31]

Answer:

The false statement is 'Electric field lines form closed loops'.

Explanation:

  • Electric field lines originate from positive end and terminates at negative end,i.e., field lines are inward in direction to the negative charges and outward from the positive charges.
  • These lines when close together represents high intensity and when far apart shows low intensity of the field.
  • These lines do not intersect, as the tangent drawn on these lines provides us with the field direction and intersection of these lines means two field directions which is not possible.
  • These lines unlike magnetic field lines do not form closed loops as they do not turn around but originate at positive end and terminates at negative end which ensures no loop formation.
8 0
3 years ago
The relationship that exists between gravity and distance and mass respectively.
ruslelena [56]

Answer:

D...............................

7 0
3 years ago
A force of 5 n produces an acceleration of 8m/s2 in mass m1 and an acceleration of 24 m/s2 in mass m2 .what acceleration would i
Inessa [10]

Acceleration of the both masses tied together= 6m/s²

Explanation:

The force is given by F= ma

so 5= m1 (8)

m1=0.625 Kg

for m2

5=m2 (24)

m2=0.208 kg

now total mass= m1+m2=0.625+0.208

Total mass=M=0.833 Kg

now F= ma

5= 0.833 (a)

a= 5/0.833

a=6m/s²

4 0
3 years ago
a person is sitting on the last bench can see clearly see things written on book but cannot see them distinctly on board. what t
marysya [2.9K]

Answer:

I think concave

Explanation:

7 0
2 years ago
Other questions:
  • Electrons are important to electric current because they are able to__________.
    11·2 answers
  • A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it
    14·1 answer
  • Write an equation that expresses the following relationship. u varies jointly with p and d and inversely with w In your equation
    5·1 answer
  • What is the energy equivalent of 5.0kg of mass?
    7·2 answers
  • The acceleration due to gravity on the moon is 1.6 m/sec. what does a 10kg mass weigh on the moon
    7·1 answer
  • If I hold a ball on my hand. Which force is stronger, my hand or gravity?
    10·2 answers
  • Nombrar y explicar cada una de las Leyes de Newton
    5·1 answer
  • What is the maximum mass that can hang without sinking from a 50-cm diameter Styrofoam sphere in water
    12·1 answer
  • Answer this please.____
    13·1 answer
  • The distance of the force from the axis of rotation is called?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!