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Q. A dragonfly flies from point A to point B along the path 1.30s y1=1.0,x1=2 and y2=6,x2=10.
Find the x and y components of its position vector at point A.
Q. Two cars travel westward along a straight highway, one at a constant velocity of 77 km/h, and the other at a constant velocity of 116 km/h.
(a) Assuming that both cars start at the same point, how much sooner does the faster car arrive at a destination 35 km away?
(b) How far must the cars travel for the faster car to arrive 10 min before the slower car?
What is the speed of the 2 cars as they move together after the collision.
He is sitting on a set of bathroom scales. He notes that scales show four times his normal weight. What is the radius of the loop, in meters.
The distance between points A and B along the open flow path is 500 ft. Calculate the total head loss between points A and B. Assume A and B are at the same elevation.
A group of hikers hears an echo 5 s after shouting. If the temperature is 16.0°C, how far away is the mountain that reflected the sound wave.
A motorist travelling at 17m/s encounters a deer in the road 49m ahead. If the maximum acceleration the vehicle's brakes are capable of is -7 m/s2. If his or her reaction time is 1.9987 s, how fast will (s) he be travelling when (s) he reaches dee..
What distance does baseball move before its release
A 17g rifle bullet travelling 220 m/s buries itself in a 3.90 kg pendulum hanging on a 3m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
A fun-loving 11.4 {rm kg} otter slides up a hill and then back down to the same place. If she starts up at 5.75 {rm m/s} and returns at 3.75 {rm m/s}, how much mechanical energy did she lose on the hill.
A car travelling at 25.0 {rm m/s} runs out of gas while travelling up a 22.0^circ slope. How far will the car go up the hill before it runs out of gas.
What is an amplitude at a point where two pulses are crossing if the end at which reflection occurs is free to slide up and down.
A jogger runs 100m due east, then changes direction for the second leg of the run. At the end of the run, she is 350m away from the starting point at an angle of 25.0° north of east. What were the direction and length of her second displacement? Util..
A 40-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, kinetic energy decreases to 240J from 470J. How high does she rise during this interval? Avoid air resistance.
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