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
goblinko [34]
2 years ago
15

I need help with this pls

Physics
1 answer:
noname [10]2 years ago
8 0

Answer:

C = (7 + 8) i + (5 - 1) j     adding vectors

C = 15 i + 4 j

theta = arctan (4 / 15) = 14.9 deg

Note that this is the same as adding x and y components

You might be interested in
What is inelastic deformation?
EleoNora [17]
The answer is A. Deformation is where the object doesnt return to its original shape.
7 0
2 years ago
On a frictionless surface how much force is necessary to accelerate a 0.49 kg object to the left at 4.8 m/s2?
Alenkasestr [34]

Answer:

<h2>2.35 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

force = 0.49 × 4.8 = 2.352

We have the final answer as

<h3>2.35 N</h3>

Hope this helps you

8 0
3 years ago
If the moon rises around 3<br> a.m., its phase must be
Luden [163]
New moon or cresant moon i believe
4 0
3 years ago
A rock falls off the edge of a building and falls for 10 seconds. What was
solmaris [256]
Ricks velocity would be zooomin out because it would fall off so strongly so it’d change and it’s weight too
4 0
3 years ago
Read 2 more answers
A ball is thrown straight up with enough speed so that it is in the air for several seconds. Assume the positive direction is up
Andrew [12]

Answer:

a) v= 0 m/s b) v= 6.86 m/s

Explanation:

a) When the ball reaches to its highest point, under the influence of gravity, before starting to fall down, it momentarily comes to an stop (this is needed prior to change direction in any movement), so, applying the definition of acceleration, and replacing the acceleration a by g, we have:

vf = v₀ - g*t (1)

The minus sign means that the acceleration due to gravity is always downward, so if we assume that the positive direction is upwards it must be negative.

At the highest point, vf= 0.

b) Prior to solve this point, we need to know which is the time when the ball reaches to its highest point.

As we know vf=0, we can solve (1) for t, as follows:

th = v₀/g

Now, for a time that is 0.7 s before this time, applying the acceleration definition and solving for v again, we have:

v = v₀ -(g *(th-0.7 s)), but th= v₀/g, so we get:

v= v₀ -g((v₀/g)-0.7 s) = v₀ - v₀ + g*0.7 s

⇒ v=g*0.7 s = 9.8 m/s²*0.7 s

⇒ v = 6.86 m/s

6 0
3 years ago
Other questions:
  • a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together
    14·1 answer
  • Anything that moves up and down or back and forth in a rhythmic way is vibrating true false
    11·2 answers
  • A baseball pitcher brings his arm forward during a pitch, rotating the forearm about the elbow. If the velocity of the ball in t
    14·1 answer
  • A 1250 kg car is pulling a 325 kb trailer. The car and trailer have an acceleration of 2,15m/sec2 together. Determine the net fo
    15·1 answer
  • Suppose you ride your bike to the library traveling at 0.5 km/min. It takes you 25 minutes to get to the library. How far did yo
    5·2 answers
  • What is the term for when a player stops the soccer ball with their foot
    7·1 answer
  • A bungee cord with a spring constant of 800 StartFraction N over m EndFraction stretches 6 meters at its greatest displacement.
    6·1 answer
  • When can a truck have less momentum than a bike? A. only when the truck is not moving B. only when it's moving faster than the b
    11·1 answer
  • (Power Cycle)​ Your new boss announces at a team meeting that she has developed atechnology that will perform a power cycle that
    12·1 answer
  • Three small spheres, having masses m1 = 1 kg, m2 = 3 kg, and m3 = 4 kg, are held fixed on the x axis in deep space where the eff
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!