Question

In: Physics

A bee was flying along a helical path so that its position vector at time t...

A bee was flying along a helical path so that its position vector at time t was r(t) = (5 cos t) i + (5 sin t) j + 2t k. At t = 4 sec it had a heart attack and died instantly. Where did it land (that is where did it hit the xy-plane in terms of its coordinates)? Assume distance is in feet and time is in seconds so g = 32 ft per second per second.

Solutions

Expert Solution

When bee got dead it will fall freely under gravity. There will be only one acceleration of been that will be acceleration due to gravity I downward direction. There we will calculate the position and the velocity of bee at t=4 sec. Then we will calculate the time taken by bee to reach on the xy plane after it got heart attack by considering the motion of bee along z axis. Then we will calculate x coordinate of bee by analyzing the motion of bee in x direction for that duration and in the similar way we will calculate the y coordinate of bee where it will land.


Related Solutions

The position vector F(t) of a moving particle at time t[s] is given by F(t)= e^t...
The position vector F(t) of a moving particle at time t[s] is given by F(t)= e^t sin(t)i-j+e^t cos(t)k a) Calculate the acceleration a(t). b) Find the distance traveled by the particle at time t = 3π/2, if the particle starts its motion at time t = π/2. c) Find the unit tangent vector of this particle at time t = 3π/2. d) Find the curvature of the path of this particle at time t = 3π/2.
An electron follows a helical path in a uniform magnetic field of magnitude 0.447 T. The...
An electron follows a helical path in a uniform magnetic field of magnitude 0.447 T. The pitch of the path is 4.88 μm, and the magnitude of the magnetic force on the electron is 1.64 × 10-15N. What is the electron's speed? ASAP
Particle Position and Time The position of a particle moving along the x axis depends on...
Particle Position and Time The position of a particle moving along the x axis depends on the time according to the equation x = ct2 - bt3, where x is in meters and t in seconds. (a) What dimension and units must c have? s2/ms/m2     m/s2m2/s What dimension and units must b have? m3/ss/m3     s3/mm/s3 For the following, let the numerical values of c and b be 3.3 and 1.0 respectively. (b) At what time does the particle reach its maximum positive...
a particle moves aling a straight line and its position at time t is given by...
a particle moves aling a straight line and its position at time t is given by s(t)= (t^3)-13.5t^2+54t where s is measured in feet and t is seconds. consider t in the interval [0,infinity) 1) when is the particle moving in the positive direction? ( i tried (0,3) U(6, infinity) but it didnt work) 2) what is the total distance the particle travels travels between time 0 and time 7 3) when is the particle speeding up? 4) when is...
The position of a particle moving along the x-axis is given by x(t) = t^3 +...
The position of a particle moving along the x-axis is given by x(t) = t^3 + 9t^2 − 21t with t is in [0, 2]. (a) Find the velocity and acceleration of the particle. (b) For what t-values is the velocity 0? (Enter your answers as a comma-separated list.) (c) When is the particle moving to the left (velocity is negative)? (Enter your answer using interval notation.) When is the particle moving to the right (velocity is positive)? (Enter your...
1) The position of an object moving along a straight line is s(t) = t^3 −...
1) The position of an object moving along a straight line is s(t) = t^3 − 15t^2 + 72t feet after t seconds. Find the object's velocity and acceleration after 9 seconds. 2) Given the function f (x ) =−3 x 2 + x − 8 , (a) Find the equation of the line tangent to f(x ) at the point (2, −2) . (b) Find the equation of the line normal to f(x ) at the point (2, −2)...
The position of a particle moving along a line (measured in meters) is s(t) where t...
The position of a particle moving along a line (measured in meters) is s(t) where t is measured in seconds. Answer all parts, include units in your answers. s(t)=2t^3 +6t^2 −48t+7 −10<t<10 (a) Find the velocity function. (b) Find all times at which the particle is at rest. (c) On what interval is the particle moving to the right? (d) Is the particle slowing down or speeding up at t = −1 seconds?
(1 point) For the given position vectors r(t)r(t) compute the unit tangent vector T(t)T(t) for the...
(1 point) For the given position vectors r(t)r(t) compute the unit tangent vector T(t)T(t) for the given value of tt . A) Let r(t)=〈cos5t,sin5t〉 Then T(π4)〈 B) Let r(t)=〈t^2,t^3〉 Then T(4)=〈 C) Let r(t)=e^(5t)i+e^(−4t)j+tk Then T(−5)=
A particle, initially at rest, moves along the x-axis so that its acceleration at any time...
A particle, initially at rest, moves along the x-axis so that its acceleration at any time t ≥ 0 is given by a(t) = 12t2−4 . The position of the particle when t=1 is x(1)=3 . Write an expression for the position x(t) of the particle at any time t ≥ 0.
Two airplanes are flying in the same direction in adjacent parallel corridors. At time t =...
Two airplanes are flying in the same direction in adjacent parallel corridors. At time t = 0, the first airplane is 10 km ahead of the second one. Suppose the speed of the first plane (km/hr) is normally distributed with mean 550 and standard deviation 9 and the second plane's speed is also normally distributed with mean and standard deviation 535 and 9, respectively.   a) What is the probability that after 2 hr of flying, the second plane has...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT