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
uysha [10]
3 years ago
7

a cart has 30J or potential energy at the top of a 20m high hill. Assuming no energy is transformed to another form of energy, h

ow much kinetic energy does the cart have when it is halfway down the hill?
Physics
1 answer:
topjm [15]3 years ago
3 0

Answer:

i would say 20J

Explanation:

You might be interested in
An object located near the surface of Earth has a weight of a 245 N
marusya05 [52]

Answer:

The mass of the object is 24.5 kg and weight of the object on Mars is 91.14 N.

Explanation:

Weight of the object on the surface of Earth, W = 245 N

On the surface of Earth, acceleration due to gravity, g = 10 m/s²

Weight of an object is given by :

W = mg

m is mass

m=\dfrac{W}{g}\\\\m=\dfrac{245\ N}{10\ m/s^2}\\\\=24.5\ kg

So, the mass of the object is 24.5 kg

Acceleration due to gravity on Mars, g' = 3.72 m/s²

Weight of the object on Mars,

W' =mg'

W' = 24.5 kg × 3.72 m/s²

= 91.14 N

So, the weight of the object on Mars is 91.14 N.

4 0
3 years ago
Which energy conversion takes place when a solar cell is used to light a street lamp?
allsm [11]

Answer:

the answer is for the question is B

8 0
3 years ago
A normal walking speed is around 2.0 m/s . how much time t does it take the box to reach this speed if it has the acceleration 5
creativ13 [48]

Given:

u(initial velocity)=0

a=5.54m/s^2

v(final velocity)=2 m/s

v=u +at

Where v is the final velocity.

u is the initial velocity

a is the acceleration.

t is the time

2=0+5.54t

t=2/5.54

t=0.36 sec


6 0
4 years ago
What is the difference between folk dance and ballroom dance
disa [49]

Answer:

folk dancing is old music and ball room is young dancing

7 0
3 years ago
I WILL GIVE BRAINLYEST!!
kenny6666 [7]

Answer:

Explanation:

White dwarfs

6 0
3 years ago
Read 2 more answers
Other questions:
  • A ball of mass 500g is thrown upwards with a velocity of 15m/s. Calculate its momentum at the highest point.
    15·1 answer
  • if a bowling ball and a golf ball or move at the same velocity, which one would have more momentum? Why?
    8·2 answers
  • A collar A of mass m is moving with a speed v when it strikes an identical collar B that is at rest. Knowing that the coefficien
    6·1 answer
  • A step-up transformer is connected to a generator that is delivering 197 v and 113 A. The ratio of the turns on the secondary is
    13·1 answer
  • The________is a measure of the number of waves that pass a point in a given amount of time
    10·2 answers
  • A father racing his son has 1/2 the kinetic energy of the son, who has 1/4 the mass of the father. The father speeds up by 1.4 m
    15·1 answer
  • You are hiking in Yellowstone National Park. A park ranger is speaking to students visiting a hot spring. Temperatures there can
    9·1 answer
  • What is the critical angle of a light beam passing drim a medium(n=2) to a medium (n=1.5)
    15·1 answer
  • 21
    6·1 answer
  • A battery causes a current of 2.0 A to flow through a lamp. The power used by the lamp is 12 watts. What is the voltage?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!