I rearranged the displacement formula to d2 = d + d1. I used cosine law to solve for d2 since the triangle is not right-angled but I am not getting the correct answer or angle for d2. The angle I used in cosine law (based on the diagram) was 32+12+90 = 134.
d = v(t) = 130(3) = 390 km/h [N 32 E]...
I do not understand part b.
I know that x180/pi changes the value into a degree, but i do not understand what's going on inside the bracket. And how did the equation calculated the direction?
I am having some difficulty understanding what "recoil" really is with respect to momentum, force, and and time.
On the one hand, momentum is considered to be the product of mass and velocity or perhaps the product of the sum of masses and some velocity, or some variant of P=mv, where P is a...
I know that by physics definition if displacement is zero, work is zero.
However, if I push an object 5 m to the east, and then move to the other side of the object and push it 5 m back to the west. I think in this case I have always done positive work on the object and hence the total work...
Summary: I can't figure out how the solver carries out the conversions from cartesian to cylindrical coordinates and vice-versa.
I have a set of points of a finite element mesh which when inputted into a solver (ansys) gives the displacement of each node. I can get the displacement values of...
Homework Statement
A projectile is launched at an angle of 60° from the horizontal and lands 99 s later at the same height from which it was launched.
1) What is the initial speed of the projectile (in m/s)?
I already figured this out to be 560.16 m/s
2) What is the maximum altitude (in m)...
Homework Statement
Instructions for finding a buried treasure include the following: Go 66.0 paces at 256deg, turn to 140deg and walk 125 paces, then travel 100 paces at 169deg. The angles are measured counterclockwise from an axis pointing to the east, the +x direction. Determine the resultant...
Homework Statement
What happens to the distance traveled in the same amount of time as an object accelerates?
Homework Equations
None[/B]
The Attempt at a Solution
None[/B]
Homework Statement
A ball is thrown off of a building in the +x direction at 10m/s. If the ball takes 2s to land, how tall is the building?
Homework Equations
Vf=Vi(a)(t)
Δd=Vi(t)+1/2(a)(t)
Vf^2=Vi^2+2(a)(Δd)
Δd=1/2(Vf-Vi)(t)
The Attempt at a Solution
Vf: 0m/s
Vi: 10m/s
a: -9.8m/s^2
t: 2s...
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A 25.0 kg sled is pulled (assume frictionless) with a force of 15.0 N at an angle of 20 degrees above the horizontal. (a.) How long will it take to pull the sled 25m? (b.) How...
Homework Statement
You enter an antique classic car road rally with your 1956 Studebaker Golden Hawk. The rally course consists of the following segments: travel north at 25.0 m/s for 30.0 min, then east at 32.0 m/sfor 40.0 min, and finally northeast at 30.0 m/s for 50.0 min. For the entire...
Homework Statement
A projectile is launched:
Horizontally, with an average displacement of 49 cm
Vertically, with an average displacement of 28 cm
At a 23 degree angle, with average displacement of 126 cm
Homework Equations
The Attempt at a Solution
I am sad to say I don't know how to do it...
Homework Statement
Your task is to estimate how far an object traveled during the time interval 0≤t≤8, but you only have the following data about the velocity of the object.
*First image
You decide to use a left endpoint Riemann sum to estimate the total displacement. So, you pick up a blue...
Hi everyone. I just have a very quick question regarding position time graphs and velocity time graphs for a pendulum.
As we know, at the maximum displacement, the acceleration is at its maximum and the velocity is zero, and vice versa when the displacement is zero.
When we put this...
I am very confused about angular velocity ω and why its used in simple harmonic motion. ω is described as θ/τ but when it comes to masses on springs, there is no angle - it is zero. Angular velocity comes from circular motion but the motion of SHM is not circular. My confusion is even greater...
Homework Statement
So there are two rhinos chasing each other back and forth, Asha and her dad. What is Asha's total displacement at each point in increasing order(least to greatest)?[/B]
Asha's velocity is represented by II and her position at A:30, B:25, C:22, D:25, E:37.
Homework...
1. The problem statement, all variables, and given/known data
A square of side 2 L is removed from one corner of a square sandwich that has sides of length L. The center of mass of the remainder of the sandwich moves from C to C’. The displacement of the y coordinate of the center of mass (from...
I noticed the other day something odd in how we use Electric and Magnetic flux.
The definitions I refer to are magnetic flux density (B), magnetic flux intensity (H), electric displacement field (D) or Electric field density (D) and electric field (E):
B = μH
ΦB = B*Area
&
D = εE
ΦE = E*Area...
I want to test the accuracy a linear displacement sensor (Hall effect) that I have, but I'm not sure what to measure it against. The sensors are made to measure with a resolution of 10μm. My initial thought was to use a drill press to move up and down, but I don't think I know of any that are...
Homework Statement
An object starts from rest and uniformly acquires a velocity of 20.0 m/s in 5.0 minutes. For the next 10. minutes the object moves with a constant speed. After 10. minutes moving at 20. m/s the object then again accelerates and reaches a speed of 15 m/s in the opposite...
Homework Statement
I'd like to understand Drag Force better; but school always ignores it. Thus, I'm asking this purely out of obssession. I'm picturing a scenario where a non-constant force is pushing an object horizontally, ignoring friction. But, I'd like to understand how Drag Force...
I'm trying to calculate the displacement d of a plane as it accelerates towards lift-off velocity.
The acceleration is given by the function a = a0 - kv2 where a0 is the constant acceleration from the plane's engine and the term -kv2 is caused by air resistance.
I can't seem to find a way to...
This is something I've always wondered and I have never taught about this at school so I leave a thread on this forum.
I know that displacement = the mass of the object, but I don't quite get this concept.
For example, if you have a kilogram of gold and a kilogram of iron and put them in...
Homework Statement
A new Tesla is designed that can perform a non-constant acceleration for 10 seconds of motion. The magnitude of the acceleration is given as a(t) = 1 m/s4t2
Starting from rest, how far does the car travel over this 10 second interval?
Homework Equations
This is what is...
Homework Statement
http://imgur.com/a/k7fwG
Find the vector magnetic potential at point P1.
Homework Equations
Vector magnetic potential given by:
$$
d \bar{A} = \frac{\mu I d\bar{l'}}{4 \pi | \bar{r} - \bar{r'} | }
$$
The Attempt at a Solution
I split up the problem in 3 parts,
first...
Homework Statement
A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the amplitude of the motion is 0.090 m , it takes the block 2.52 sto travel from x= 0.090 m to x= -0.090 m .
If the amplitude is doubled, to 0.180 m , how long does...
Homework Statement
A 1.10 kg mass on a spring has displacement as a function of time given by the equation
x(t)=(7.40cm)cos[(4.16rad/s)t−2.42rad].
Find the position of the mass at t=1.00s;
Homework Equations
x = Acos(ωt+∅)
The Attempt at a Solution
I tried to just plug in the time t in that...
Homework Statement
If you know the acceleration of a car and its initial velocity, you can predict which of the following?
A. The direction of the car's initial velocity
B. The magnitude of the car's final velocity
C. The displacement of the car
D. All of the above
Homework Equations
I said...