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
madam [21]
3 years ago
8

james throws a baseball with a horizontal component velocity of 30 m/s east and a vertical component velocity of 40m/s North.How

fast is james?
Physics
1 answer:
olga2289 [7]3 years ago
6 0
Force vectors, use Pythagoras to get resultant force: sqrt ((30^2 + (40^2)) = 50m/s
You might be interested in
if mass of an object is decreased to half and acting force is reduced by quarter the acceleration of its motion​
11111nata11111 [884]

Answer:

See explanations below

Explanation:

According to Newtons second law of motion

F = mass * acceleration

F = ma

If mass of an object is decreased to half, then m₂ = 1/2 m

If acting force is reduced by quarter, then F₂ = 3/4 F

F₂ = m₂a₂

3/4F = 1/2m a₂

Divide both expressions

(3/4F)/F = (1/2m)a₂/ma

3/4 = 1/2a₂/a

3/4 = a₂/2a

4a₂ = 6a

2a₂ = 3a

a₂ = 3/2 a

Hence the acceleration of its motion will be one and a half of its original acceleration.

8 0
3 years ago
Explain why energy must be added to a solid to cause it to melt.
Tema [17]
Most of the time heat melts solids. hope that helps :)
8 0
3 years ago
Read 2 more answers
What is refraction and reflection​
timofeeve [1]

Answer:

Reflection is simply the property of a light that rebounds or bounces back after hitting a surface.

Refraction is when the light, which passes through a surface, undergoes some changes in appearance whenever it usually passes through a medium.

3 0
3 years ago
Can you check this? Samantha swam upstream for some distance in one hour. She then swam downstream the same river for the same d
lorasvet [3.4K]
So her speed in still water will be 6mph :)

4 0
4 years ago
Read 2 more answers
Newton's first law states that objects do not change their motion unless acted upon by a net force. What does the word "net" mea
serious [3.7K]

Answer:

Explanation:

C Remaining or left over after everything has been accounted for.

You can have as many forces as you can define as long as there is an opposing force that cancels it out. If there is just 1 more force that cannot be cancelled, then it is a remaining force and it determines what happens to the object.

The rest have to do with something that resembles a fisherman's net.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is meant by activation energy when it comes to chemical reactions?
    14·1 answer
  • An organ pipe open at both ends has a radius of 4.0 cm and a length of 6.0 m. what is the frequency (in hz) of the third harmoni
    14·1 answer
  • What is the Thermal energy firm Friction?
    9·2 answers
  • A large atom decays and emits a particle. After the reaction is complete, the atom’s mass has changed substantially. What kind o
    6·2 answers
  • Three particles lie in the xy plane. Particle 1 has mass m1 = 6.7 kg and lies on the x-axis at x1 = 4.2 m, y1 = 0. Particle 2 ha
    8·1 answer
  • Neutron stars are extremely dense objects formed from the remnants of supernova explosions. Many rotate very rapidly. Suppose th
    10·1 answer
  • An advantage of the clinical method is that is
    13·1 answer
  • . Alpha-emitting substances, such as radon gas, can be a serious health hazard only if _____. their radiation strikes the skin t
    11·1 answer
  • I NEED HELP WITH NUMBER 7 I WILL GIVE U BRAINLIEST
    14·1 answer
  • Wassup people of this wor;d
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!