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
gregori [183]
2 years ago
6

If a 340 g ball has 2.4 J of kinetic energy, what is it's velocity?

Physics
2 answers:
Leno4ka [110]2 years ago
6 0

Answer:

Explanation:

i really dont know im a 4th grader

sergiy2304 [10]2 years ago
4 0

Answer:

3.76

Explanation:

KE = 1/2 * m *v^2

v=\sqrt{2.4*2/340 *1000}

You might be interested in
If an object was accelerating at 10 m/s2, and a mass of 1 kg, what was size of the force acting on the object?
ryzh [129]

Answer:

10 N

Explanation:

f = ma

= 10m/s^2 * 1 kg

=10N

7 0
3 years ago
You are launching a 2 kg potato out of a potato cannon. The cannon is 2.0 m long and is aimed 70 degrees above the horizontal. I
DochEvi [55]

Answer:

Explanation:

The net force on the potatoes is given by:

F= 52 - mgSintheta

F= 52- (2×9.8× Sin70°)

F = 52 -18.4

F= 33.58N

Using Newton's 2nd law

F = ma

a=F/m = 33.58/ 2 = 16.79m/s^2

Using the equation of motion:

V^2= u^2 + 2as

V^2 = 0 + 2× 16.79 x2

V^2 = 67.16

V=sqrt(68.16)

V= 8.195m/s This is the exit velocity of the potatoes

Kinetic energy, K.E = 1/2mv^2

KE= 1/2 × 2 × 8.195^2

KE = 67.16J

8 0
3 years ago
How much gravitational potential energy does a 45.2 kg object have when it is 21.9m above the ground?
Blizzard [7]

Answer:

Explanation:

The formula for gravitational potential energy is

Ep = m · g · h   Assuming that the acceleration is g = 10m/s²

Ep = 45.4 · 10 · 21.9 = 9,942.6 J

God is with you!!!

6 0
3 years ago
at the sewing store, ava bought a bag of buttons. 21 in all. 21 of the buttons were large. what percentage of the buttons wre la
erma4kov [3.2K]
If she only has 21 buttons and all 21 of them are large, then all of her buttons are large. so 100% of the buttons would be large.
6 0
3 years ago
Read 2 more answers
If the half-life of niobium-91 is 680 years, how long will it take for the decay described in the previous question?
Svet_ta [14]
2040

15.4+2.2/2 until it equals 2.2
( divide by 3)

680(years)*3 devisions = 2040
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is process that involves the collection of information and ideas supported by belief or opinion for science?
    6·1 answer
  • Your pencil is 11 cm long . How long is it in millimeters?
    7·1 answer
  • Based on the locations of the elements aluminum (AI), silicon (Si), and phosphorus (P) on the periodic table, which lists the
    5·1 answer
  • Two objects were lifted by a machine. one object had a mass of 2 kilograms and was lifted at the speed of 2 m/s. the other had a
    13·1 answer
  • Mechanical advantage of a machine can be increased by designing it for:
    9·1 answer
  • If the particle is located slightly to the left of point B, its acceleration is __________.
    8·1 answer
  • What is the acceleration of a 50 kg object pushed with a net force of 500 newtons?
    14·1 answer
  • Q.1 Lorna built the circuit diagram below. All the bulbs are identical. (a) Complete the table below by writing on or off for ea
    5·1 answer
  • A wave carries _____ from one place to another <br><br> Mechanical waves carry energy through ______
    7·2 answers
  • Which has the most kinetic energy?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!