Answer only Number 1. ReferencesViewSectionToolsQ dick to find commandsReviewミ,、以, 四9-月三山正三 .田.AaBbCcDd AaBb AaBbCi AaBbC.EANormalHeading 1 Heading 2 Heading 3Word TypesettingFind and SelectSettings"StoReplace1.A motorboat was moving [E 20° S] at 50.0 km/h. The operator then turned the boatE 20° N] and decreased the speed to 30.0 km/h over 5.0 min. Determine the averageacceleration of the boat.2. A person decides to swim across a river 84 m wide that has a current moving with avelocity of 0.40 m/s [E]. The person swims at 0.70 m/s N] relative to the water. K/UT/I A(a) What is the velocity of the person with respect to Earth?(b) How long will it take to cross?(c) How far downstream will the person land?(d) In what direction should she swim if she lands at a point directly north of herstarting position?I.3. A basketball player is standing 9.5 m from the basket, which is at a height of 3.1 m.She throws the ball from an initial height of 2.0 m at an angle of 35° above thehorizontal. The ball goes straight through the basket. Determine the initial speed ofthe ball.4.The air velocity of a small plane is 230 km/h [N 35° E] when the wind is blowing at75 km/h [W 25° S]. Determine the velocity of the plane relative to theground.

50kmph E 20° S 30kmph E 20° N East and West as X axis North and South as Y axis T= 5min

Answered: 1.A motorboat was moving E 20° S] at…

1.A motorboat was moving E 20° S] at 50.0 km/h. The operator then turned the boat E 20° N] and decreased the speed to 30.0 km/h over 5.0 mim. Determine the average acceleration of the boat.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

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Answer only Number 1.

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Q dick to find commands
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ミ,、以, 四9-月
三山正三 .田.
AaBbCcDd AaBb AaBbCi AaBbC.
EA
Normal
Heading 1 Heading 2 Heading 3
Word Typesetting
Find and Select
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1.A motorboat was moving [E 20° S] at 50.0 km/h. The operator then turned the boat
E 20° N] and decreased the speed to 30.0 km/h over 5.0 min. Determine the average
acceleration of the boat.
2. A person decides to swim across a river 84 m wide that has a current moving with a
velocity of 0.40 m/s [E]. The person swims at 0.70 m/s N] relative to the water. K/U
T/I A
(a) What is the velocity of the person with respect to Earth?
(b) How long will it take to cross?
(c) How far downstream will the person land?
(d) In what direction should she swim if she lands at a point directly north of her
starting position?
I.
3. A basketball player is standing 9.5 m from the basket, which is at a height of 3.1 m.
She throws the ball from an initial height of 2.0 m at an angle of 35° above the
horizontal. The ball goes straight through the basket. Determine the initial speed of
the ball.
4.The air velocity of a small plane is 230 km/h [N 35° E] when the wind is blowing at
75 km/h [W 25° S]. Determine the velocity of the plane relative to the
ground.

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