An object which experiences either a change in the magnitude or the direction of the velocity vector can be said to be accelerating. This explains why an object moving in a circle at constant speed can be said to accelerate - the direction of the velocity changes.

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3 years ago

Which sporting event is symbolic of American culture?

Zolol [24]

Baseball is known as americas past time

7 0

3 years ago

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A man is crossing a river of width 100 m on a motorboat. The velocity of the motor boat is 4 m/s eastward and the velocity of th

Airida [17]

By the Pythagorean theorem we get $3^2+4^2=5^2$ . Thus the resultant velocity will be 5 m/s.

However there is a typo in the choices. It should take 25 seconds to cross the river, not 20 seconds, since the boat actually travels 125 meters due to the water current, and 125/5 = 25 seconds.

Alternatively you can calculate the eastward component of travel and get 100 / 4 = 25 seconds.

5 0

3 years ago