Recent content by sagaradeath

can anyone help me with the answer to this problem?

Homework Statement The position r-> of a particle moving in an xy plane is given by r->=(2t^3-2t)i+(3-2t^4)j with r in meters and t in seconds. What is the angle between the positive direction of the x-axis and a line tangent to the particle's path at t = 3 s? Give your answer in the range...

is this right? this equation should get me the answer but i think I am doing it wrong tan(P) = v/u = 3.1801/2.27 = 1.4009

Physic Problem. Please Help! Homework Statement Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water. Although the fish sees the insect along a straight-line path at angle φ and distance d, a drop must be launched at a...

thatz the thing i don't know how to start it

Homework Statement A football kicker can give the ball an initial speed of 30 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 48 m in front of goalposts whose horizontal bar is 3.44 m above the ground? Homework...

um i don't get what your saying

yeah i don't get sorry :(

so it would be like this sin(49) x 132=99.62?

wait I don't understand

Homework Statement A woman walks 132 m in the direction 41° east of north, then 170 m directly east. Find (a) the magnitude and (b) the angle (from due east) of her final displacement from the starting point. (c) Find the distance she walks. Homework Equations ?? The Attempt at a...

Urgent! Question Problem! Please Help! 1. Homework Statement [/b] In the sum A-> + B-> = C->, A-> vector has a magnitude of 13.8 m and is angled 44.0° counterclockwise from the +x direction, and vector C-> has a magnitude of 16.8 m and is angled 18.8° counterclockwise from the -x direction...