A boat is heading due east at speed v when passengers onboardspot a dolphin swimming due north away from them, relativeto their moving boat. Which of the following must be true ofthe dolphin’s motion relative to a stationary observer floatingin the water (choose one)? The dolphin is (a) heading southof east at a speed greater than v, (b) heading south of west at aspeed less than v, (c) heading north of east at a speed greaterthan v, or (d) heading north of west at a speed less than v.

Q: A projectile is fired northward from a height of 243m. Assuming that the x-axis is pointing east,…

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Q: A projectile is thrown from the ground with a speed of 30 m·s−1 at an angle of 35◦ from the…

A: The initial speed of the projectile,                                         The angle from…

Q: Mr. M's truck at a velocity of 14m/s [E]. At an exact instant, he sees his friend, Mr. T 35m away…

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Q: Hello, (a) In what direction would the ship in Exercise 3.57 have to travel in order to have a…

A: First resolve the velocity in x and y direction

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Q: A swimmer heads 30◦ west of north relative to the water of a 200-m wide river as shown in the…

A: Write the velocity of the current in vectro form. v→C=vCi Write the velocity of the swimmer in still…

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Q: Omar swims across a river at a velocity of 2.50 m/s [30 o N of E] with respect to the water. The…

A: Given: Velocity of the Omar u = 2.5 m/s in [30 o N of E]  velocity of the river v = 5.4 m/s in East…

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A: The questions deal with the vectors. The vector resolution method concepts help to solve these…

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Q: A knife is dropped from the top of a 14.0 m high mast on a ship moving at 1.74 m/s due south. (a)…

A: we use the formula , v2-u2=-2gh

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Q: A boat is heading due south at 6.00 m/s with respect to a river. The river is flowing 4.00 m/s due…

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Q: A boat is trying to cross a river that is flowing to the right. In order to cross the river straight…

A: Please see the answer below

Q: your way back from the lake, you’re worst friend is driving and trying to post some stupid selfies…

A: Distance = speed × time The three equation of motion are v = u + at. v² = u² + 2as. s = ut + ½at²

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.